From dcf16ff191f2b76c4e7a033f5a40073fe0c1d974 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Sun, 18 Jan 2026 09:41:43 -0800
Subject: [PATCH] maint: make update-copyright

---
 AUTHORS                                   |  3 +-
 ChangeLog-2012                            |  2 +-
 Makefile.am                               |  4 +--
 NEWS                                      |  3 +-
 PACKAGING                                 |  2 +-
 README                                    |  4 +--
 README-alpha                              |  2 +-
 README-hacking.md                         |  2 +-
 THANKS                                    |  3 +-
 TODO                                      |  4 +--
 autogen.sh                                |  2 +-
 autopull.sh                               |  2 +-
 bootstrap-funclib.sh                      |  2 +-
 bootstrap.conf                            |  4 +--
 build-aux/Darwin.valgrind                 |  4 +--
 build-aux/Linux.valgrind                  |  4 +--
 build-aux/cross-options.pl                |  2 +-
 build-aux/local.mk                        |  4 +--
 build-aux/update-b4-copyright             |  4 +--
 build-aux/update-package-copyright-year   |  4 +--
 build-aux/update-test                     |  2 +-
 cfg.mk                                    |  4 +--
 configure.ac                              |  6 ++--
 data/README.md                            |  4 +--
 data/bison-default.css                    |  2 +-
 data/local.mk                             |  2 +-
 data/skeletons/bison.m4                   |  2 +-
 data/skeletons/c++-skel.m4                |  2 +-
 data/skeletons/c++.m4                     |  2 +-
 data/skeletons/c-like.m4                  |  4 +--
 data/skeletons/c-skel.m4                  |  2 +-
 data/skeletons/c.m4                       |  2 +-
 data/skeletons/d-skel.m4                  |  2 +-
 data/skeletons/d.m4                       |  2 +-
 data/skeletons/glr.c                      |  8 ++---
 data/skeletons/glr.cc                     |  6 ++--
 data/skeletons/glr2.cc                    |  4 +--
 data/skeletons/java-skel.m4               |  2 +-
 data/skeletons/java.m4                    |  4 +--
 data/skeletons/lalr1.cc                   |  6 ++--
 data/skeletons/lalr1.d                    |  6 ++--
 data/skeletons/lalr1.java                 |  4 +--
 data/skeletons/location.cc                |  6 ++--
 data/skeletons/stack.hh                   |  4 +--
 data/skeletons/variant.hh                 |  4 +--
 data/skeletons/yacc.c                     |  4 +--
 data/xslt/bison.xsl                       |  4 +--
 data/xslt/xml2dot.xsl                     |  4 +--
 data/xslt/xml2text.xsl                    |  4 +--
 data/xslt/xml2xhtml.xsl                   |  4 +--
 doc/bison.texi                            | 40 +++++++++++------------
 doc/local.mk                              |  4 +--
 doc/refcard.tex                           |  4 +--
 etc/README.md                             |  4 +--
 etc/bench.pl.in                           |  2 +-
 etc/local.mk                              |  2 +-
 examples/README.md                        |  2 +-
 examples/c++/README.md                    |  2 +-
 examples/c++/calc++/README.md             |  2 +-
 examples/c++/calc++/calc++.test           |  4 +--
 examples/c++/calc++/local.mk              |  4 +--
 examples/c++/glr/README.md                |  2 +-
 examples/c++/glr/ast.hh                   |  2 +-
 examples/c++/glr/c++-types.test           |  2 +-
 examples/c++/glr/c++-types.yy             |  2 +-
 examples/c++/glr/local.mk                 |  2 +-
 examples/c++/local.mk                     |  2 +-
 examples/c++/variant-11.test              |  2 +-
 examples/c++/variant-11.yy                |  4 +--
 examples/c++/variant.test                 |  2 +-
 examples/c++/variant.yy                   |  4 +--
 examples/c/README.md                      |  2 +-
 examples/c/bistromathic/README.md         |  2 +-
 examples/c/bistromathic/bistromathic.test |  2 +-
 examples/c/bistromathic/local.mk          |  2 +-
 examples/c/bistromathic/parse.y           |  2 +-
 examples/c/calc/README.md                 |  2 +-
 examples/c/calc/calc.test                 |  2 +-
 examples/c/calc/local.mk                  |  2 +-
 examples/c/glr/README.md                  |  2 +-
 examples/c/glr/c++-types.test             |  2 +-
 examples/c/glr/c++-types.y                |  2 +-
 examples/c/glr/local.mk                   |  2 +-
 examples/c/lexcalc/README.md              |  2 +-
 examples/c/lexcalc/lexcalc.test           |  2 +-
 examples/c/lexcalc/local.mk               |  2 +-
 examples/c/lexcalc/parse.y                |  2 +-
 examples/c/lexcalc/scan.l                 |  2 +-
 examples/c/local.mk                       |  2 +-
 examples/c/mfcalc/local.mk                |  4 +--
 examples/c/mfcalc/mfcalc.test             |  4 +--
 examples/c/pushcalc/README.md             |  2 +-
 examples/c/pushcalc/calc.test             |  2 +-
 examples/c/pushcalc/calc.y                |  2 +-
 examples/c/pushcalc/local.mk              |  2 +-
 examples/c/reccalc/README.md              |  2 +-
 examples/c/reccalc/local.mk               |  2 +-
 examples/c/reccalc/parse.y                |  2 +-
 examples/c/reccalc/reccalc.test           |  2 +-
 examples/c/reccalc/scan.l                 |  2 +-
 examples/c/rpcalc/local.mk                |  4 +--
 examples/c/rpcalc/rpcalc.test             |  4 +--
 examples/d/README.md                      |  2 +-
 examples/d/calc/calc.test                 |  2 +-
 examples/d/calc/calc.y                    |  2 +-
 examples/d/calc/local.mk                  |  2 +-
 examples/d/local.mk                       |  2 +-
 examples/d/simple/calc.test               |  2 +-
 examples/d/simple/calc.y                  |  2 +-
 examples/d/simple/local.mk                |  2 +-
 examples/extexi                           |  4 +--
 examples/java/README.md                   |  2 +-
 examples/java/calc/Calc.test              |  2 +-
 examples/java/calc/Calc.y                 |  2 +-
 examples/java/calc/local.mk               |  2 +-
 examples/java/local.mk                    |  2 +-
 examples/java/simple/Calc.test            |  2 +-
 examples/java/simple/Calc.y               |  2 +-
 examples/java/simple/local.mk             |  2 +-
 examples/local.mk                         |  2 +-
 examples/test                             |  4 +--
 lib/get-errno.c                           |  4 +--
 lib/get-errno.h                           |  2 +-
 lib/local.mk                              |  4 +--
 lib/main.c                                |  2 +-
 lib/path-join.c                           |  2 +-
 lib/path-join.h                           |  2 +-
 lib/timevar.def                           |  4 +--
 lib/yyerror.c                             |  2 +-
 m4/bison-check-compiler-flag.m4           |  2 +-
 m4/bison-cxx-std.m4                       |  2 +-
 m4/bison-i18n.m4                          |  4 +--
 m4/c-working.m4                           |  2 +-
 m4/cxx.m4                                 |  4 +--
 m4/flex.m4                                |  4 +--
 src/AnnotationList.c                      |  4 +--
 src/AnnotationList.h                      |  4 +--
 src/InadequacyList.c                      |  4 +--
 src/InadequacyList.h                      |  4 +--
 src/Sbitset.c                             |  4 +--
 src/Sbitset.h                             |  4 +--
 src/assoc.c                               |  2 +-
 src/assoc.h                               |  4 +--
 src/closure.c                             |  2 +-
 src/closure.h                             |  4 +--
 src/complain.c                            |  4 +--
 src/complain.h                            |  2 +-
 src/conflicts.c                           |  2 +-
 src/conflicts.h                           |  4 +--
 src/counterexample.c                      |  2 +-
 src/counterexample.h                      |  2 +-
 src/derivation.c                          |  2 +-
 src/derivation.h                          |  2 +-
 src/derives.c                             |  4 +--
 src/derives.h                             |  4 +--
 src/files.c                               |  4 +--
 src/files.h                               |  2 +-
 src/fixits.c                              |  2 +-
 src/fixits.h                              |  2 +-
 src/flex-scanner.h                        |  2 +-
 src/getargs.c                             |  4 +--
 src/getargs.h                             |  4 +--
 src/glyphs.c                              |  2 +-
 src/glyphs.h                              |  2 +-
 src/gram.c                                |  4 +--
 src/gram.h                                |  2 +-
 src/graphviz.c                            |  4 +--
 src/graphviz.h                            |  2 +-
 src/ielr.c                                |  4 +--
 src/ielr.h                                |  4 +--
 src/lalr.c                                |  2 +-
 src/lalr.h                                |  2 +-
 src/local.mk                              |  4 +--
 src/location.c                            |  2 +-
 src/location.h                            |  2 +-
 src/lr0.c                                 |  4 +--
 src/lr0.h                                 |  4 +--
 src/lssi.c                                |  2 +-
 src/lssi.h                                |  2 +-
 src/main.c                                |  2 +-
 src/muscle-tab.c                          |  4 +--
 src/muscle-tab.h                          |  4 +--
 src/named-ref.c                           |  4 +--
 src/named-ref.h                           |  4 +--
 src/nullable.c                            |  4 +--
 src/nullable.h                            |  4 +--
 src/output.c                              |  4 +--
 src/output.h                              |  4 +--
 src/parse-gram.c                          |  2 +-
 src/parse-gram.y                          |  4 +--
 src/parse-simulation.c                    |  2 +-
 src/parse-simulation.h                    |  2 +-
 src/print-graph.c                         |  4 +--
 src/print-graph.h                         |  4 +--
 src/print-xml.c                           |  2 +-
 src/print-xml.h                           |  2 +-
 src/print.c                               |  2 +-
 src/print.h                               |  2 +-
 src/reader.c                              |  2 +-
 src/reader.h                              |  4 +--
 src/reduce.c                              |  4 +--
 src/reduce.h                              |  2 +-
 src/relation.c                            |  2 +-
 src/relation.h                            |  4 +--
 src/scan-code.h                           |  4 +--
 src/scan-code.l                           |  4 +--
 src/scan-gram.h                           |  4 +--
 src/scan-gram.l                           |  4 +--
 src/scan-skel.h                           |  4 +--
 src/scan-skel.l                           |  4 +--
 src/state-item.c                          |  2 +-
 src/state-item.h                          |  2 +-
 src/state.c                               |  4 +--
 src/state.h                               |  4 +--
 src/strversion.c                          |  2 +-
 src/strversion.h                          |  2 +-
 src/symlist.c                             |  2 +-
 src/symlist.h                             |  2 +-
 src/symtab.c                              |  4 +--
 src/symtab.h                              |  4 +--
 src/system.h                              |  4 +--
 src/tables.c                              |  2 +-
 src/tables.h                              |  4 +--
 src/uniqstr.c                             |  4 +--
 src/uniqstr.h                             |  4 +--
 tests/actions.at                          |  4 +--
 tests/atlocal.in                          |  4 +--
 tests/bison.in                            |  4 +--
 tests/c++.at                              |  2 +-
 tests/calc.at                             |  4 +--
 tests/conflicts.at                        |  2 +-
 tests/counterexample.at                   |  2 +-
 tests/cxx-type.at                         |  4 +--
 tests/d.at                                |  2 +-
 tests/diagnostics.at                      |  2 +-
 tests/existing.at                         |  4 +--
 tests/glr-regression.at                   |  4 +--
 tests/headers.at                          |  4 +--
 tests/input.at                            |  4 +--
 tests/java.at                             |  4 +--
 tests/javapush.at                         |  4 +--
 tests/linear                              |  2 +-
 tests/local.at                            |  4 +--
 tests/local.mk                            |  4 +--
 tests/m4.at                               |  2 +-
 tests/named-refs.at                       |  4 +--
 tests/output.at                           |  2 +-
 tests/push.at                             |  2 +-
 tests/reduce.at                           |  2 +-
 tests/regression.at                       |  4 +--
 tests/report.at                           |  2 +-
 tests/scanner.at                          |  2 +-
 tests/sets.at                             |  4 +--
 tests/skeletons.at                        |  2 +-
 tests/synclines.at                        |  4 +--
 tests/testsuite.at                        |  4 +--
 tests/torture.at                          |  4 +--
 tests/types.at                            |  4 +--
 258 files changed, 404 insertions(+), 401 deletions(-)

diff --git a/AUTHORS b/AUTHORS
index d80d1ff9..73695ba8 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -24,7 +24,8 @@ and nasty bugs.
 
 -----
 
-Copyright (C) 1998-2015, 2018-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 1998-2015, 2018-2022, 2025-2026 Free Software Foundation,
+Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/ChangeLog-2012 b/ChangeLog-2012
index cdfb6a3d..8af7a3dc 100644
--- a/ChangeLog-2012
+++ b/ChangeLog-2012
@@ -26732,7 +26732,7 @@
 
 	-----
 
-	Copyright (C) 1987-1988, 1991-2015, 2018-2022, 2025 Free
+	Copyright (C) 1987-1988, 1991-2015, 2018-2022, 2025-2026 Free
 	Software Foundation, Inc.
 
 	Copying and distribution of this file, with or without
diff --git a/Makefile.am b/Makefile.am
index 7b3887b8..87c91b94 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,7 +1,7 @@
 ## Process this file with automake to produce Makefile.in.
 
-# Copyright (C) 2001-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2001-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/NEWS b/NEWS
index cdef3238..4dacab7e 100644
--- a/NEWS
+++ b/NEWS
@@ -4748,7 +4748,8 @@ mode: outline
 fill-column: 76
 End:
 
-Copyright (C) 1995-2015, 2018-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 1995-2015, 2018-2022, 2025-2026 Free Software Foundation,
+Inc.
 
 This file is part of Bison, the GNU Parser Generator.
 
diff --git a/PACKAGING b/PACKAGING
index c5194a42..70b190a9 100644
--- a/PACKAGING
+++ b/PACKAGING
@@ -36,7 +36,7 @@ to the bison package.
 
 -----
 
-Copyright (C) 2002, 2005, 2009-2015, 2018-2022, 2025 Free Software
+Copyright (C) 2002, 2005, 2009-2015, 2018-2022, 2025-2026 Free Software
 Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
diff --git a/README b/README
index 6a7cf7f9..670843ac 100644
--- a/README
+++ b/README
@@ -120,8 +120,8 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 1992, 1998-1999, 2003-2005, 2008-2015, 2018-2022, 2025
-Free Software Foundation, Inc.
+Copyright (C) 1992, 1998-1999, 2003-2005, 2008-2015, 2018-2022,
+2025-2026 Free Software Foundation, Inc.
 
 This file is part of GNU bison, the GNU Compiler Compiler.
 
diff --git a/README-alpha b/README-alpha
index 6488603d..81dfc46a 100644
--- a/README-alpha
+++ b/README-alpha
@@ -12,7 +12,7 @@ the problems you encounter.
 
 -----
 
-Copyright (C) 2002, 2004, 2009-2015, 2018-2022, 2025 Free Software
+Copyright (C) 2002, 2004, 2009-2015, 2018-2022, 2025-2026 Free Software
 Foundation, Inc.
 
 This file is part of GNU Bison.
diff --git a/README-hacking.md b/README-hacking.md
index 930eb691..f8cfd5da 100644
--- a/README-hacking.md
+++ b/README-hacking.md
@@ -638,7 +638,7 @@ bootstrapped.
 
 <!--
 
-Copyright (C) 2002-2005, 2007-2015, 2018-2022, 2025 Free Software
+Copyright (C) 2002-2005, 2007-2015, 2018-2022, 2025-2026 Free Software
 Foundation, Inc.
 
 This file is part of GNU Bison.
diff --git a/THANKS b/THANKS
index c2183478..a016b287 100644
--- a/THANKS
+++ b/THANKS
@@ -242,7 +242,8 @@ End:
 
 -----
 
-Copyright (C) 2000-2015, 2018-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 2000-2015, 2018-2022, 2025-2026 Free Software Foundation,
+Inc.
 
 This file is part of Bison, the GNU Parser Generator.
 
diff --git a/TODO b/TODO
index 793e4473..ff015f6f 100644
--- a/TODO
+++ b/TODO
@@ -714,8 +714,8 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2001-2004, 2006, 2008-2015, 2018-2022, 2025 Free Software
-Foundation, Inc.
+Copyright (C) 2001-2004, 2006, 2008-2015, 2018-2022, 2025-2026 Free
+Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/autogen.sh b/autogen.sh
index 0f3d8092..1401374d 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -4,7 +4,7 @@
 # also regenerates all aclocal.m4, config.h.in, Makefile.in, configure files
 # with new versions of autoconf or automake.
 
-# Copyright (C) 2003-2025 Free Software Foundation, Inc.
+# Copyright (C) 2003-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/autopull.sh b/autopull.sh
index 04f60634..a5c1b910 100755
--- a/autopull.sh
+++ b/autopull.sh
@@ -2,7 +2,7 @@
 # Convenience script for fetching auxiliary files that are omitted from
 # the version control repository of this package.
 
-# Copyright (C) 2003-2025 Free Software Foundation, Inc.
+# Copyright (C) 2003-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/bootstrap-funclib.sh b/bootstrap-funclib.sh
index e4f42103..3bedf367 100644
--- a/bootstrap-funclib.sh
+++ b/bootstrap-funclib.sh
@@ -2,7 +2,7 @@
 
 scriptlibversion=2025-06-10.02; # UTC
 
-# Copyright (C) 2003-2025 Free Software Foundation, Inc.
+# Copyright (C) 2003-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/bootstrap.conf b/bootstrap.conf
index 2e9513c3..03c518a7 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -1,7 +1,7 @@
 # Bootstrap configuration.
 
-# Copyright (C) 2006-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2006-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/Darwin.valgrind b/build-aux/Darwin.valgrind
index 4a06f451..82e0257e 100644
--- a/build-aux/Darwin.valgrind
+++ b/build-aux/Darwin.valgrind
@@ -1,5 +1,5 @@
-# Copyright (C) 2012-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2012-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/Linux.valgrind b/build-aux/Linux.valgrind
index 7e30a6fc..0781848c 100644
--- a/build-aux/Linux.valgrind
+++ b/build-aux/Linux.valgrind
@@ -1,5 +1,5 @@
-# Copyright (C) 2012-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2012-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/cross-options.pl b/build-aux/cross-options.pl
index 7fe4de2b..b7bb91f3 100755
--- a/build-aux/cross-options.pl
+++ b/build-aux/cross-options.pl
@@ -2,7 +2,7 @@
 
 # Generate a release announcement message.
 
-# Copyright (C) 2007-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2007-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/local.mk b/build-aux/local.mk
index 54e4f64e..8c8cf2e4 100644
--- a/build-aux/local.mk
+++ b/build-aux/local.mk
@@ -1,5 +1,5 @@
-## Copyright (C) 2000-2015, 2018-2022, 2025 Free Software Foundation,
-## Inc.
+## Copyright (C) 2000-2015, 2018-2022, 2025-2026 Free Software
+## Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/build-aux/update-b4-copyright b/build-aux/update-b4-copyright
index 71c11612..c024078d 100755
--- a/build-aux/update-b4-copyright
+++ b/build-aux/update-b4-copyright
@@ -3,8 +3,8 @@
 # Update b4_copyright invocations or b4_copyright_years definitions to
 # include the current year.
 
-# Copyright (C) 2009-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2009-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/update-package-copyright-year b/build-aux/update-package-copyright-year
index c35efdbd..78dd8364 100755
--- a/build-aux/update-package-copyright-year
+++ b/build-aux/update-package-copyright-year
@@ -2,8 +2,8 @@
 
 # In configure.ac, update PACKAGE_COPYRIGHT_YEAR to the current year.
 
-# Copyright (C) 2010-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2010-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/update-test b/build-aux/update-test
index e7d9df4d..b576edbc 100755
--- a/build-aux/update-test
+++ b/build-aux/update-test
@@ -2,7 +2,7 @@
 
 # Update expectations in an Autotest test suite.
 
-# Copyright (C) 2019-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2019-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/cfg.mk b/cfg.mk
index 462ea63c..031bf36e 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -1,6 +1,6 @@
 ## Customize maint.mk                           -*- makefile -*-
-## Copyright (C) 2008-2015, 2018-2022, 2025 Free Software Foundation,
-## Inc.
+## Copyright (C) 2008-2015, 2018-2022, 2025-2026 Free Software
+## Foundation, Inc.
 
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/configure.ac b/configure.ac
index 0ac24c9a..ef742e9c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 # Configure template for GNU Bison.                   -*-Autoconf-*-
 #
-# Copyright (C) 2001-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2001-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -25,7 +25,7 @@ AC_INIT([GNU Bison],
         [bug-bison@gnu.org],
         [],
         [https://www.gnu.org/software/bison/])
-AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2025])
+AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2026])
 AC_DEFINE_UNQUOTED([PACKAGE_COPYRIGHT_YEAR], [$PACKAGE_COPYRIGHT_YEAR],
                    [The copyright year for this package])
 
diff --git a/data/README.md b/data/README.md
index 0a77642d..fd5eda2d 100644
--- a/data/README.md
+++ b/data/README.md
@@ -207,8 +207,8 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2002, 2008-2015, 2018-2022, 2025 Free Software Foundation,
-Inc.
+Copyright (C) 2002, 2008-2015, 2018-2022, 2025-2026 Free Software
+Foundation, Inc.
 
 This file is part of GNU Bison.
 
diff --git a/data/bison-default.css b/data/bison-default.css
index 836ffeef..f956223a 100644
--- a/data/bison-default.css
+++ b/data/bison-default.css
@@ -1,5 +1,5 @@
 /* Default styling rules for Bison when doing terminal output.
-   Copyright (C) 2019-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2019-2022, 2025-2026 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/data/local.mk b/data/local.mk
index 3937c0cb..cea6433e 100644
--- a/data/local.mk
+++ b/data/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2002, 2005-2015, 2018-2022, 2025 Free Software
+## Copyright (C) 2002, 2005-2015, 2018-2022, 2025-2026 Free Software
 ## Foundation, Inc.
 
 ## This program is free software: you can redistribute it and/or modify
diff --git a/data/skeletons/bison.m4 b/data/skeletons/bison.m4
index e0c730d7..762f140c 100644
--- a/data/skeletons/bison.m4
+++ b/data/skeletons/bison.m4
@@ -2,7 +2,7 @@
 
 # Language-independent M4 Macros for Bison.
 
-# Copyright (C) 2002, 2004-2015, 2018-2022, 2025 Free Software
+# Copyright (C) 2002, 2004-2015, 2018-2022, 2025-2026 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
diff --git a/data/skeletons/c++-skel.m4 b/data/skeletons/c++-skel.m4
index a8402c64..84577c08 100644
--- a/data/skeletons/c++-skel.m4
+++ b/data/skeletons/c++-skel.m4
@@ -2,7 +2,7 @@
 
 # C++ skeleton dispatching for Bison.
 
-# Copyright (C) 2006-2007, 2009-2015, 2018-2022, 2025 Free Software
+# Copyright (C) 2006-2007, 2009-2015, 2018-2022, 2025-2026 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
diff --git a/data/skeletons/c++.m4 b/data/skeletons/c++.m4
index fa26b069..b55f7762 100644
--- a/data/skeletons/c++.m4
+++ b/data/skeletons/c++.m4
@@ -2,7 +2,7 @@
 
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2002-2022, 2025-2026 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/data/skeletons/c-like.m4 b/data/skeletons/c-like.m4
index 2ae373f1..25a241b5 100644
--- a/data/skeletons/c-like.m4
+++ b/data/skeletons/c-like.m4
@@ -2,8 +2,8 @@
 
 # Common code for C-like languages (C, C++, Java, etc.)
 
-# Copyright (C) 2012-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2012-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/data/skeletons/c-skel.m4 b/data/skeletons/c-skel.m4
index 88f576c0..b145cc1b 100644
--- a/data/skeletons/c-skel.m4
+++ b/data/skeletons/c-skel.m4
@@ -2,7 +2,7 @@
 
 # C skeleton dispatching for Bison.
 
-# Copyright (C) 2006-2007, 2009-2015, 2018-2022, 2025 Free Software
+# Copyright (C) 2006-2007, 2009-2015, 2018-2022, 2025-2026 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
diff --git a/data/skeletons/c.m4 b/data/skeletons/c.m4
index cdfd8126..898ee1cc 100644
--- a/data/skeletons/c.m4
+++ b/data/skeletons/c.m4
@@ -2,7 +2,7 @@
 
 # C M4 Macros for Bison.
 
-# Copyright (C) 2002, 2004-2015, 2018-2022, 2025 Free Software
+# Copyright (C) 2002, 2004-2015, 2018-2022, 2025-2026 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
diff --git a/data/skeletons/d-skel.m4 b/data/skeletons/d-skel.m4
index a4ff170a..8580fed5 100644
--- a/data/skeletons/d-skel.m4
+++ b/data/skeletons/d-skel.m4
@@ -2,7 +2,7 @@
 
 # D skeleton dispatching for Bison.
 
-# Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/data/skeletons/d.m4 b/data/skeletons/d.m4
index bf509a40..673a0f29 100644
--- a/data/skeletons/d.m4
+++ b/data/skeletons/d.m4
@@ -2,7 +2,7 @@
 
 # D language support for Bison
 
-# Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/data/skeletons/glr.c b/data/skeletons/glr.c
index 2f7e31ee..bac83085 100644
--- a/data/skeletons/glr.c
+++ b/data/skeletons/glr.c
@@ -2,8 +2,8 @@
 
 # GLR skeleton for Bison
 
-# Copyright (C) 2002-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2002-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -200,7 +200,7 @@ b4_glr_cc_if([],
 [b4_header_if(
 [b4_output_begin([b4_spec_header_file])
 b4_copyright([Skeleton interface for Bison GLR parsers in C],
-             [2002-2015, 2018-2022, 2025])[
+             [2002-2015, 2018-2022, 2025-2026])[
 ]b4_cpp_guard_open([b4_spec_mapped_header_file])[
 ]b4_shared_declarations[
 ]b4_cpp_guard_close([b4_spec_mapped_header_file])[
@@ -214,7 +214,7 @@ b4_copyright([Skeleton interface for Bison GLR parsers in C],
 
 b4_output_begin([b4_parser_file_name])
 b4_copyright([Skeleton implementation for Bison GLR parsers in C],
-             [2002-2015, 2018-2022, 2025])[
+             [2002-2015, 2018-2022, 2025-2026])[
 /* C GLR parser skeleton written by Paul Hilfinger.  */
 
 ]b4_disclaimer[
diff --git a/data/skeletons/glr.cc b/data/skeletons/glr.cc
index 6c25b8bf..bd6efb14 100644
--- a/data/skeletons/glr.cc
+++ b/data/skeletons/glr.cc
@@ -1,7 +1,7 @@
 # C++ GLR skeleton for Bison
 
-# Copyright (C) 2002-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2002-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -382,7 +382,7 @@ b4_percent_code_get([[requires]])[
 ]b4_header_if(
 [b4_output_begin([b4_spec_header_file])
 b4_copyright([Skeleton interface for Bison GLR parsers in C++],
-             [2002-2015, 2018-2022, 2025])[
+             [2002-2015, 2018-2022, 2025-2026])[
 // C++ GLR parser skeleton written by Akim Demaille.
 
 ]b4_disclaimer[
diff --git a/data/skeletons/glr2.cc b/data/skeletons/glr2.cc
index 28b12ecd..3ec734da 100644
--- a/data/skeletons/glr2.cc
+++ b/data/skeletons/glr2.cc
@@ -1,7 +1,7 @@
 # C++ GLR skeleton for Bison
 
-# Copyright (C) 2002-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2002-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/data/skeletons/java-skel.m4 b/data/skeletons/java-skel.m4
index fab432df..0af07ad4 100644
--- a/data/skeletons/java-skel.m4
+++ b/data/skeletons/java-skel.m4
@@ -2,7 +2,7 @@
 
 # Java skeleton dispatching for Bison.
 
-# Copyright (C) 2007, 2009-2015, 2018-2022, 2025 Free Software
+# Copyright (C) 2007, 2009-2015, 2018-2022, 2025-2026 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
diff --git a/data/skeletons/java.m4 b/data/skeletons/java.m4
index a520b203..21b016dd 100644
--- a/data/skeletons/java.m4
+++ b/data/skeletons/java.m4
@@ -2,8 +2,8 @@
 
 # Java language support for Bison
 
-# Copyright (C) 2007-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2007-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/data/skeletons/lalr1.cc b/data/skeletons/lalr1.cc
index 9f60d2b4..11dcd37e 100644
--- a/data/skeletons/lalr1.cc
+++ b/data/skeletons/lalr1.cc
@@ -1,7 +1,7 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2002-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -160,7 +160,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param))])])
 
 
 m4_pushdef([b4_copyright_years],
-           [2002-2015, 2018-2022, 2025])
+           [2002-2015, 2018-2022, 2025-2026])
 
 m4_define([b4_parser_class],
           [b4_percent_define_get([[api.parser.class]])])
diff --git a/data/skeletons/lalr1.d b/data/skeletons/lalr1.d
index d5723e6e..28762ebc 100644
--- a/data/skeletons/lalr1.d
+++ b/data/skeletons/lalr1.d
@@ -1,7 +1,7 @@
 # D skeleton for Bison -*- autoconf -*-
 
-# Copyright (C) 2007-2012, 2019-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2007-2012, 2019-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -62,7 +62,7 @@ b4_use_push_for_pull_if([
 # or as class instance variable when doing push parsing.
 b4_output_begin([b4_parser_file_name])
 b4_copyright([Skeleton implementation for Bison LALR(1) parsers in D],
-             [2007-2012, 2019-2022, 2025])[
+             [2007-2012, 2019-2022, 2025-2026])[
 ]b4_disclaimer[
 ]b4_percent_define_ifdef([package], [module b4_percent_define_get([package]);
 ])[
diff --git a/data/skeletons/lalr1.java b/data/skeletons/lalr1.java
index 70a482e5..bf060e5e 100644
--- a/data/skeletons/lalr1.java
+++ b/data/skeletons/lalr1.java
@@ -1,7 +1,7 @@
 # Java skeleton for Bison                           -*- java -*-
 
-# Copyright (C) 2007-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2007-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/data/skeletons/location.cc b/data/skeletons/location.cc
index 20211830..07d0f9c1 100644
--- a/data/skeletons/location.cc
+++ b/data/skeletons/location.cc
@@ -1,7 +1,7 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2002-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -17,7 +17,7 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 m4_pushdef([b4_copyright_years],
-           [2002-2015, 2018-2022, 2025])
+           [2002-2015, 2018-2022, 2025-2026])
 
 
 # b4_location_file
diff --git a/data/skeletons/stack.hh b/data/skeletons/stack.hh
index dade4745..08446e00 100644
--- a/data/skeletons/stack.hh
+++ b/data/skeletons/stack.hh
@@ -1,7 +1,7 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2002-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/data/skeletons/variant.hh b/data/skeletons/variant.hh
index e3a38786..4306f04f 100644
--- a/data/skeletons/variant.hh
+++ b/data/skeletons/variant.hh
@@ -1,7 +1,7 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2002-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/data/skeletons/yacc.c b/data/skeletons/yacc.c
index ef4b0134..1172e2e8 100644
--- a/data/skeletons/yacc.c
+++ b/data/skeletons/yacc.c
@@ -1,11 +1,11 @@
 #                                                            -*- C -*-
 # Yacc compatible skeleton for Bison
 
-# Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2022, 2025 Free
+# Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2022, 2025-2026 Free
 # Software Foundation, Inc.
 
 m4_pushdef([b4_copyright_years],
-           [1984, 1989-1990, 2000-2015, 2018-2022, 2025])
+           [1984, 1989-1990, 2000-2015, 2018-2022, 2025-2026])
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/data/xslt/bison.xsl b/data/xslt/bison.xsl
index 8a8ec132..0be3a352 100644
--- a/data/xslt/bison.xsl
+++ b/data/xslt/bison.xsl
@@ -3,8 +3,8 @@
 <!--
     bison.xsl - common templates for Bison XSLT.
 
-    Copyright (C) 2007-2015, 2018-2022, 2025 Free Software Foundation,
-    Inc.
+    Copyright (C) 2007-2015, 2018-2022, 2025-2026 Free Software
+    Foundation, Inc.
 
     This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/data/xslt/xml2dot.xsl b/data/xslt/xml2dot.xsl
index 0bff9354..198b973b 100644
--- a/data/xslt/xml2dot.xsl
+++ b/data/xslt/xml2dot.xsl
@@ -3,8 +3,8 @@
 <!--
     xml2dot.xsl - transform Bison XML Report into DOT.
 
-    Copyright (C) 2007-2015, 2018-2022, 2025 Free Software Foundation,
-    Inc.
+    Copyright (C) 2007-2015, 2018-2022, 2025-2026 Free Software
+    Foundation, Inc.
 
     This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/data/xslt/xml2text.xsl b/data/xslt/xml2text.xsl
index b225843a..d1834fe0 100644
--- a/data/xslt/xml2text.xsl
+++ b/data/xslt/xml2text.xsl
@@ -3,8 +3,8 @@
 <!--
     xml2text.xsl - transform Bison XML Report into plain text.
 
-    Copyright (C) 2007-2015, 2018-2022, 2025 Free Software Foundation,
-    Inc.
+    Copyright (C) 2007-2015, 2018-2022, 2025-2026 Free Software
+    Foundation, Inc.
 
     This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/data/xslt/xml2xhtml.xsl b/data/xslt/xml2xhtml.xsl
index a4f14196..b90f0528 100644
--- a/data/xslt/xml2xhtml.xsl
+++ b/data/xslt/xml2xhtml.xsl
@@ -3,8 +3,8 @@
 <!--
     xml2html.xsl - transform Bison XML Report into XHTML.
 
-    Copyright (C) 2007-2015, 2018-2022, 2025 Free Software Foundation,
-    Inc.
+    Copyright (C) 2007-2015, 2018-2022, 2025-2026 Free Software
+    Foundation, Inc.
 
     This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/doc/bison.texi b/doc/bison.texi
index 0afe71b0..a72fdd6d 100644
--- a/doc/bison.texi
+++ b/doc/bison.texi
@@ -173,8 +173,8 @@
 This manual (@value{UPDATED}) is for GNU Bison (version @value{VERSION}),
 the GNU parser generator.
 
-Copyright @copyright{} 1988--1993, 1995, 1998--2015, 2018--2022, 2025
-Free Software Foundation, Inc.
+Copyright @copyright{} 1988--1993, 1995, 1998--2015, 2018--2022,
+2025--2026 Free Software Foundation, Inc.
 
 @quotation
 Permission is granted to copy, distribute and/or modify this document under
@@ -1736,8 +1736,8 @@ after @samp{//}.
 @example
 /* Parser for rpcalc.   -*- C -*-
 
-   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025--2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -2629,8 +2629,8 @@ calculator.
 @example
 /* Parser for mfcalc.   -*- C -*-
 
-   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025--2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -2765,8 +2765,8 @@ provides for either functions or variables to be placed in the table.
 @example
 /* Functions for mfcalc.   -*- C -*-
 
-   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025--2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -12232,8 +12232,8 @@ generate C++.
 @example
 /* Simple variant-based parser.   -*- C++ -*-
 
-   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025--2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -13324,8 +13324,8 @@ library components, and the declaration of the parser class.
 @example
 /* Driver for calc++.   -*- C++ -*-
 
-   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025--2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -13421,8 +13421,8 @@ The implementation of the driver (@file{driver.cc}) is straightforward.
 @example
 /* Driver for calc++.   -*- C++ -*-
 
-   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025--2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -13489,8 +13489,8 @@ designed the grammar for.
 @example
 /* Parser for calc++.   -*- C++ -*-
 
-   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025--2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -13702,8 +13702,8 @@ then the parser's to get the set of defined tokens.
 @example
 /* Scanner for calc++.   -*- C++ -*-
 
-   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025--2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -13964,8 +13964,8 @@ The top level file, @file{calc++.cc}, poses no problem.
 @example
 /* Main for calc++.   -*- C++ -*-
 
-   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1988--1993, 1995, 1998--2015, 2018--2021, 2025--2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/doc/local.mk b/doc/local.mk
index 5895916e..b42fed68 100644
--- a/doc/local.mk
+++ b/doc/local.mk
@@ -1,5 +1,5 @@
-## Copyright (C) 2001-2003, 2005-2015, 2018-2022, 2025 Free Software
-## Foundation, Inc.
+## Copyright (C) 2001-2003, 2005-2015, 2018-2022, 2025-2026 Free
+## Software Foundation, Inc.
 
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/doc/refcard.tex b/doc/refcard.tex
index 6face2b1..9cc6828a 100644
--- a/doc/refcard.tex
+++ b/doc/refcard.tex
@@ -19,8 +19,8 @@
 \def\finalout{\overfullrule=0pt}
 %\finalout
 
-% Copyright (c) 1998, 2001, 2009--2015, 2018--2022, 2025 Free Software
-% Foundation, Inc.
+% Copyright (c) 1998, 2001, 2009--2015, 2018--2022, 2025--2026 Free
+% Software Foundation, Inc.
 %
 % This file is part of Bison.
 %
diff --git a/etc/README.md b/etc/README.md
index be3c8227..7196f2a1 100644
--- a/etc/README.md
+++ b/etc/README.md
@@ -22,8 +22,8 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2006, 2009-2015, 2018-2022, 2025 Free Software Foundation,
-Inc.
+Copyright (C) 2006, 2009-2015, 2018-2022, 2025-2026 Free Software
+Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/etc/bench.pl.in b/etc/bench.pl.in
index cf25d016..77e54c9e 100755
--- a/etc/bench.pl.in
+++ b/etc/bench.pl.in
@@ -1,6 +1,6 @@
 #! /usr/bin/perl -w
 
-# Copyright (C) 2006, 2008-2015, 2018-2022, 2025 Free Software
+# Copyright (C) 2006, 2008-2015, 2018-2022, 2025-2026 Free Software
 # Foundation, Inc.
 #
 # This file is part of Bison, the GNU Compiler Compiler.
diff --git a/etc/local.mk b/etc/local.mk
index 02666009..48a02cdb 100644
--- a/etc/local.mk
+++ b/etc/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2006, 2008-2015, 2018-2022, 2025 Free Software
+## Copyright (C) 2006, 2008-2015, 2018-2022, 2025-2026 Free Software
 ## Foundation, Inc.
 
 ## This program is free software: you can redistribute it and/or modify
diff --git a/examples/README.md b/examples/README.md
index 6dfbf7bc..02ceeea0 100644
--- a/examples/README.md
+++ b/examples/README.md
@@ -17,7 +17,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/examples/c++/README.md b/examples/c++/README.md
index 2f8cb11c..0861de99 100644
--- a/examples/c++/README.md
+++ b/examples/c++/README.md
@@ -55,7 +55,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/examples/c++/calc++/README.md b/examples/c++/calc++/README.md
index 782c3ded..a0896946 100644
--- a/examples/c++/calc++/README.md
+++ b/examples/c++/calc++/README.md
@@ -36,7 +36,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/examples/c++/calc++/calc++.test b/examples/c++/calc++/calc++.test
index 9550ee49..f3c64ccf 100755
--- a/examples/c++/calc++/calc++.test
+++ b/examples/c++/calc++/calc++.test
@@ -1,7 +1,7 @@
 #! /bin/sh
 
-# Copyright (C) 2005-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2005-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/c++/calc++/local.mk b/examples/c++/calc++/local.mk
index 4a2f7d01..e75123da 100644
--- a/examples/c++/calc++/local.mk
+++ b/examples/c++/calc++/local.mk
@@ -1,5 +1,5 @@
-## Copyright (C) 2005-2006, 2008-2015, 2018-2022, 2025 Free Software
-## Foundation, Inc.
+## Copyright (C) 2005-2006, 2008-2015, 2018-2022, 2025-2026 Free
+## Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/c++/glr/README.md b/examples/c++/glr/README.md
index 9661beef..17645994 100644
--- a/examples/c++/glr/README.md
+++ b/examples/c++/glr/README.md
@@ -13,7 +13,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/c++/glr/ast.hh b/examples/c++/glr/ast.hh
index 20e328f4..f47699dd 100644
--- a/examples/c++/glr/ast.hh
+++ b/examples/c++/glr/ast.hh
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+  Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/examples/c++/glr/c++-types.test b/examples/c++/glr/c++-types.test
index ecf7367e..f29af485 100644
--- a/examples/c++/glr/c++-types.test
+++ b/examples/c++/glr/c++-types.test
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/c++/glr/c++-types.yy b/examples/c++/glr/c++-types.yy
index bd4c32a8..5a0128f1 100644
--- a/examples/c++/glr/c++-types.yy
+++ b/examples/c++/glr/c++-types.yy
@@ -1,5 +1,5 @@
 /*                                                       -*- C++ -*-
-  Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+  Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/examples/c++/glr/local.mk b/examples/c++/glr/local.mk
index f70fc0a7..8b70a345 100644
--- a/examples/c++/glr/local.mk
+++ b/examples/c++/glr/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/c++/local.mk b/examples/c++/local.mk
index b00bcb45..7bbd4aaa 100644
--- a/examples/c++/local.mk
+++ b/examples/c++/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/c++/variant-11.test b/examples/c++/variant-11.test
index 5fc6648e..0df1cb14 100644
--- a/examples/c++/variant-11.test
+++ b/examples/c++/variant-11.test
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/c++/variant-11.yy b/examples/c++/variant-11.yy
index ee1fd30e..e66ebde8 100644
--- a/examples/c++/variant-11.yy
+++ b/examples/c++/variant-11.yy
@@ -1,6 +1,6 @@
 /*
-  Copyright (C) 2008-2015, 2018-2022, 2025 Free Software Foundation,
-  Inc.
+  Copyright (C) 2008-2015, 2018-2022, 2025-2026 Free Software
+  Foundation, Inc.
 
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/examples/c++/variant.test b/examples/c++/variant.test
index 79b4d563..6fb1a6ae 100644
--- a/examples/c++/variant.test
+++ b/examples/c++/variant.test
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/c++/variant.yy b/examples/c++/variant.yy
index a059fa5e..cc7929e2 100644
--- a/examples/c++/variant.yy
+++ b/examples/c++/variant.yy
@@ -1,6 +1,6 @@
 /*
-  Copyright (C) 2008-2015, 2018-2022, 2025 Free Software Foundation,
-  Inc.
+  Copyright (C) 2008-2015, 2018-2022, 2025-2026 Free Software
+  Foundation, Inc.
 
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/examples/c/README.md b/examples/c/README.md
index abc2f420..5525f7e0 100644
--- a/examples/c/README.md
+++ b/examples/c/README.md
@@ -81,7 +81,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
 This file is part of GNU bison, the GNU Compiler Compiler.
 
diff --git a/examples/c/bistromathic/README.md b/examples/c/bistromathic/README.md
index de3e4e9c..d35ad5d0 100644
--- a/examples/c/bistromathic/README.md
+++ b/examples/c/bistromathic/README.md
@@ -32,7 +32,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/c/bistromathic/bistromathic.test b/examples/c/bistromathic/bistromathic.test
index a5e33063..4cd91753 100755
--- a/examples/c/bistromathic/bistromathic.test
+++ b/examples/c/bistromathic/bistromathic.test
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/c/bistromathic/local.mk b/examples/c/bistromathic/local.mk
index f719fe3c..7af0fd1d 100644
--- a/examples/c/bistromathic/local.mk
+++ b/examples/c/bistromathic/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/c/bistromathic/parse.y b/examples/c/bistromathic/parse.y
index ecf98273..f62a8ff2 100644
--- a/examples/c/bistromathic/parse.y
+++ b/examples/c/bistromathic/parse.y
@@ -1,6 +1,6 @@
 /* Parser and scanner for bistromathic.   -*- C -*-
 
-   Copyright (C) 2019-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2019-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/c/calc/README.md b/examples/c/calc/README.md
index 465a826e..9e81d5a2 100644
--- a/examples/c/calc/README.md
+++ b/examples/c/calc/README.md
@@ -9,7 +9,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2019-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 2019-2022, 2025-2026 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/c/calc/calc.test b/examples/c/calc/calc.test
index d2483064..30336372 100644
--- a/examples/c/calc/calc.test
+++ b/examples/c/calc/calc.test
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2019-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2019-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/c/calc/local.mk b/examples/c/calc/local.mk
index e98e6da5..b5f5c694 100644
--- a/examples/c/calc/local.mk
+++ b/examples/c/calc/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2019-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2019-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/c/glr/README.md b/examples/c/glr/README.md
index bd36d305..b55e1af6 100644
--- a/examples/c/glr/README.md
+++ b/examples/c/glr/README.md
@@ -10,7 +10,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/c/glr/c++-types.test b/examples/c/glr/c++-types.test
index d976f5a1..e8d9813f 100644
--- a/examples/c/glr/c++-types.test
+++ b/examples/c/glr/c++-types.test
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/c/glr/c++-types.y b/examples/c/glr/c++-types.y
index 4f516d35..139c2b75 100644
--- a/examples/c/glr/c++-types.y
+++ b/examples/c/glr/c++-types.y
@@ -1,5 +1,5 @@
 /*                                                       -*- C -*-
-  Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+  Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/examples/c/glr/local.mk b/examples/c/glr/local.mk
index 6c1f4710..e5ff5321 100644
--- a/examples/c/glr/local.mk
+++ b/examples/c/glr/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/c/lexcalc/README.md b/examples/c/lexcalc/README.md
index 722506c9..989d1916 100644
--- a/examples/c/lexcalc/README.md
+++ b/examples/c/lexcalc/README.md
@@ -11,7 +11,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/c/lexcalc/lexcalc.test b/examples/c/lexcalc/lexcalc.test
index 818d951f..c9423fc6 100644
--- a/examples/c/lexcalc/lexcalc.test
+++ b/examples/c/lexcalc/lexcalc.test
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/c/lexcalc/local.mk b/examples/c/lexcalc/local.mk
index 25702e67..f9dff202 100644
--- a/examples/c/lexcalc/local.mk
+++ b/examples/c/lexcalc/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/c/lexcalc/parse.y b/examples/c/lexcalc/parse.y
index f7315bbd..e8af1f19 100644
--- a/examples/c/lexcalc/parse.y
+++ b/examples/c/lexcalc/parse.y
@@ -1,6 +1,6 @@
 /* Parser for lexcalc.   -*- C -*-
 
-   Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/c/lexcalc/scan.l b/examples/c/lexcalc/scan.l
index 4e24b708..e8586e99 100644
--- a/examples/c/lexcalc/scan.l
+++ b/examples/c/lexcalc/scan.l
@@ -1,6 +1,6 @@
 /* Scanner for lexcalc.   -*- C -*-
 
-   Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/c/local.mk b/examples/c/local.mk
index 2c1ff69b..62abc964 100644
--- a/examples/c/local.mk
+++ b/examples/c/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/c/mfcalc/local.mk b/examples/c/mfcalc/local.mk
index a9a0f7b9..749363f5 100644
--- a/examples/c/mfcalc/local.mk
+++ b/examples/c/mfcalc/local.mk
@@ -1,5 +1,5 @@
-## Copyright (C) 2005-2006, 2008-2015, 2018-2022, 2025 Free Software
-## Foundation, Inc.
+## Copyright (C) 2005-2006, 2008-2015, 2018-2022, 2025-2026 Free
+## Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/c/mfcalc/mfcalc.test b/examples/c/mfcalc/mfcalc.test
index f91ff3e9..331f6ffc 100755
--- a/examples/c/mfcalc/mfcalc.test
+++ b/examples/c/mfcalc/mfcalc.test
@@ -1,7 +1,7 @@
 #! /bin/sh
 
-# Copyright (C) 2005-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2005-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/c/pushcalc/README.md b/examples/c/pushcalc/README.md
index 66ad5e33..f4e41a77 100644
--- a/examples/c/pushcalc/README.md
+++ b/examples/c/pushcalc/README.md
@@ -20,7 +20,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/examples/c/pushcalc/calc.test b/examples/c/pushcalc/calc.test
index c04870a7..07ae0c7d 100644
--- a/examples/c/pushcalc/calc.test
+++ b/examples/c/pushcalc/calc.test
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/c/pushcalc/calc.y b/examples/c/pushcalc/calc.y
index 56da9dee..dcfd1df1 100644
--- a/examples/c/pushcalc/calc.y
+++ b/examples/c/pushcalc/calc.y
@@ -1,6 +1,6 @@
 /* Parser and scanner for pushcalc.   -*- C -*-
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/c/pushcalc/local.mk b/examples/c/pushcalc/local.mk
index 0c9ddef0..72ccb4d4 100644
--- a/examples/c/pushcalc/local.mk
+++ b/examples/c/pushcalc/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/c/reccalc/README.md b/examples/c/reccalc/README.md
index 4c5cdcd2..25055b45 100644
--- a/examples/c/reccalc/README.md
+++ b/examples/c/reccalc/README.md
@@ -26,7 +26,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/examples/c/reccalc/local.mk b/examples/c/reccalc/local.mk
index af80d622..7f4711c0 100644
--- a/examples/c/reccalc/local.mk
+++ b/examples/c/reccalc/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2019-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2019-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/c/reccalc/parse.y b/examples/c/reccalc/parse.y
index 64dbfbc6..d7f09ad0 100644
--- a/examples/c/reccalc/parse.y
+++ b/examples/c/reccalc/parse.y
@@ -1,6 +1,6 @@
 /* Parser for reccalc.   -*- C -*-
 
-   Copyright (C) 2019-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2019-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/c/reccalc/reccalc.test b/examples/c/reccalc/reccalc.test
index ebaedb46..99837fff 100644
--- a/examples/c/reccalc/reccalc.test
+++ b/examples/c/reccalc/reccalc.test
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/c/reccalc/scan.l b/examples/c/reccalc/scan.l
index d0acde03..4ed13fa0 100644
--- a/examples/c/reccalc/scan.l
+++ b/examples/c/reccalc/scan.l
@@ -1,6 +1,6 @@
 /* Scanner for reccalc.   -*- C -*-
 
-   Copyright (C) 2019-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2019-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/c/rpcalc/local.mk b/examples/c/rpcalc/local.mk
index 56eb43e6..62227f20 100644
--- a/examples/c/rpcalc/local.mk
+++ b/examples/c/rpcalc/local.mk
@@ -1,5 +1,5 @@
-## Copyright (C) 2005-2006, 2008-2015, 2018-2022, 2025 Free Software
-## Foundation, Inc.
+## Copyright (C) 2005-2006, 2008-2015, 2018-2022, 2025-2026 Free
+## Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/c/rpcalc/rpcalc.test b/examples/c/rpcalc/rpcalc.test
index 8a49ff46..0721d43e 100755
--- a/examples/c/rpcalc/rpcalc.test
+++ b/examples/c/rpcalc/rpcalc.test
@@ -1,7 +1,7 @@
 #! /bin/sh
 
-# Copyright (C) 2005-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2005-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/d/README.md b/examples/d/README.md
index 38556359..5ec65b0a 100644
--- a/examples/d/README.md
+++ b/examples/d/README.md
@@ -18,7 +18,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/examples/d/calc/calc.test b/examples/d/calc/calc.test
index b59fe325..3aeece1b 100644
--- a/examples/d/calc/calc.test
+++ b/examples/d/calc/calc.test
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/d/calc/calc.y b/examples/d/calc/calc.y
index 46b6d35b..47f15555 100644
--- a/examples/d/calc/calc.y
+++ b/examples/d/calc/calc.y
@@ -1,6 +1,6 @@
 /* Parser and scanner for calc in D.   -*- D -*-
 
-   Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/d/calc/local.mk b/examples/d/calc/local.mk
index 9299b282..ceed1fd0 100644
--- a/examples/d/calc/local.mk
+++ b/examples/d/calc/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/d/local.mk b/examples/d/local.mk
index 20f2a68f..342d18bc 100644
--- a/examples/d/local.mk
+++ b/examples/d/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/d/simple/calc.test b/examples/d/simple/calc.test
index 13f801f2..6569266a 100644
--- a/examples/d/simple/calc.test
+++ b/examples/d/simple/calc.test
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/d/simple/calc.y b/examples/d/simple/calc.y
index 5cc25430..78dec21f 100644
--- a/examples/d/simple/calc.y
+++ b/examples/d/simple/calc.y
@@ -1,6 +1,6 @@
 /* Parser and scanner for calc in D.   -*- D -*-
 
-   Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/d/simple/local.mk b/examples/d/simple/local.mk
index 6035fd78..7ac9b039 100644
--- a/examples/d/simple/local.mk
+++ b/examples/d/simple/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/extexi b/examples/extexi
index 94cfe424..bca3faf9 100755
--- a/examples/extexi
+++ b/examples/extexi
@@ -3,8 +3,8 @@
 
 # This file is part of GNU Bison
 
-# Copyright (C) 1992, 2000-2001, 2005-2006, 2009-2015, 2018-2022, 2025
-# Free Software Foundation, Inc.
+# Copyright (C) 1992, 2000-2001, 2005-2006, 2009-2015, 2018-2022,
+# 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/java/README.md b/examples/java/README.md
index 0cd785c6..39b46f1b 100644
--- a/examples/java/README.md
+++ b/examples/java/README.md
@@ -19,7 +19,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/examples/java/calc/Calc.test b/examples/java/calc/Calc.test
index 0b16232e..6fa2f5f8 100644
--- a/examples/java/calc/Calc.test
+++ b/examples/java/calc/Calc.test
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/java/calc/Calc.y b/examples/java/calc/Calc.y
index 74119673..04c2a673 100644
--- a/examples/java/calc/Calc.y
+++ b/examples/java/calc/Calc.y
@@ -1,6 +1,6 @@
 /* Parser and scanner for calc in Java.   -*- Java -*-
 
-   Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/java/calc/local.mk b/examples/java/calc/local.mk
index 02638eae..e9f21ab6 100644
--- a/examples/java/calc/local.mk
+++ b/examples/java/calc/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/java/local.mk b/examples/java/local.mk
index c054046f..6c618cb7 100644
--- a/examples/java/local.mk
+++ b/examples/java/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/java/simple/Calc.test b/examples/java/simple/Calc.test
index 2287636b..f6cf6f95 100644
--- a/examples/java/simple/Calc.test
+++ b/examples/java/simple/Calc.test
@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/examples/java/simple/Calc.y b/examples/java/simple/Calc.y
index 4a3a4da9..225d9f2e 100644
--- a/examples/java/simple/Calc.y
+++ b/examples/java/simple/Calc.y
@@ -1,6 +1,6 @@
 /* Simple parser and scanner in Java.   -*- Java -*-
 
-   Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/examples/java/simple/local.mk b/examples/java/simple/local.mk
index 85ac49ee..400306d6 100644
--- a/examples/java/simple/local.mk
+++ b/examples/java/simple/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+## Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/examples/local.mk b/examples/local.mk
index cba12f1b..84a0144f 100644
--- a/examples/local.mk
+++ b/examples/local.mk
@@ -1,4 +1,4 @@
-## Copyright (C) 2005, 2008-2015, 2018-2022, 2025 Free Software
+## Copyright (C) 2005, 2008-2015, 2018-2022, 2025-2026 Free Software
 ## Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
diff --git a/examples/test b/examples/test
index f5100649..d7252b7e 100755
--- a/examples/test
+++ b/examples/test
@@ -1,7 +1,7 @@
 #! /bin/sh
 
-# Copyright (C) 2005-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2005-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/lib/get-errno.c b/lib/get-errno.c
index fca67363..b62c8755 100644
--- a/lib/get-errno.c
+++ b/lib/get-errno.c
@@ -1,7 +1,7 @@
 /* get-errno.c - get and set errno.
 
-   Copyright (C) 2002, 2006, 2009-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/get-errno.h b/lib/get-errno.h
index 1f4b76ce..2a09fe38 100644
--- a/lib/get-errno.h
+++ b/lib/get-errno.h
@@ -1,6 +1,6 @@
 /* get-errno.h - get and set errno.
 
-   Copyright (C) 2002, 2009-2015, 2018-2022, 2025 Free Software
+   Copyright (C) 2002, 2009-2015, 2018-2022, 2025-2026 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/local.mk b/lib/local.mk
index a0aaec81..2a1df536 100644
--- a/lib/local.mk
+++ b/lib/local.mk
@@ -1,5 +1,5 @@
-## Copyright (C) 2001-2015, 2018-2022, 2025 Free Software Foundation,
-## Inc.
+## Copyright (C) 2001-2015, 2018-2022, 2025-2026 Free Software
+## Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/lib/main.c b/lib/main.c
index 3358a6bb..a6bd8088 100644
--- a/lib/main.c
+++ b/lib/main.c
@@ -1,6 +1,6 @@
 /* Yacc library main function.
 
-   Copyright (C) 2002, 2009-2015, 2018-2022, 2025 Free Software
+   Copyright (C) 2002, 2009-2015, 2018-2022, 2025-2026 Free Software
    Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/lib/path-join.c b/lib/path-join.c
index 714516a0..b74c66cd 100644
--- a/lib/path-join.c
+++ b/lib/path-join.c
@@ -1,5 +1,5 @@
 /* Concatenate path components.
-   Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
diff --git a/lib/path-join.h b/lib/path-join.h
index 727de270..4c4b0c62 100644
--- a/lib/path-join.h
+++ b/lib/path-join.h
@@ -1,5 +1,5 @@
 /* Concatenate path components.
-   Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
diff --git a/lib/timevar.def b/lib/timevar.def
index 3a806644..650574fb 100644
--- a/lib/timevar.def
+++ b/lib/timevar.def
@@ -1,8 +1,8 @@
 /* This file contains the definitions for timing variables used to -*- C -*-
    measure run-time performance of the compiler.
 
-   Copyright (C) 2002, 2007, 2009-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2002, 2007, 2009-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    Contributed by Akim Demaille <akim@freefriends.org>.
 
diff --git a/lib/yyerror.c b/lib/yyerror.c
index bcd8316d..b87d4627 100644
--- a/lib/yyerror.c
+++ b/lib/yyerror.c
@@ -1,6 +1,6 @@
 /* Yacc library error-printing function.
 
-   Copyright (C) 2002, 2009-2015, 2018-2022, 2025 Free Software
+   Copyright (C) 2002, 2009-2015, 2018-2022, 2025-2026 Free Software
    Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/m4/bison-check-compiler-flag.m4 b/m4/bison-check-compiler-flag.m4
index 6a313054..43b6312a 100644
--- a/m4/bison-check-compiler-flag.m4
+++ b/m4/bison-check-compiler-flag.m4
@@ -2,7 +2,7 @@
 
 # serial 1
 
-# Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/bison-cxx-std.m4 b/m4/bison-cxx-std.m4
index a6f4c116..34067791 100644
--- a/m4/bison-cxx-std.m4
+++ b/m4/bison-cxx-std.m4
@@ -1,6 +1,6 @@
 # bison-cxx-std.m4 serial 1
 
-# Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/bison-i18n.m4 b/m4/bison-i18n.m4
index 57a2c865..f648d9d8 100644
--- a/m4/bison-i18n.m4
+++ b/m4/bison-i18n.m4
@@ -1,7 +1,7 @@
 # bison-i18n.m4 serial 2
 
-dnl Copyright (C) 2005-2006, 2009-2015, 2018-2022, 2025 Free Software
-dnl Foundation, Inc.
+dnl Copyright (C) 2005-2006, 2009-2015, 2018-2022, 2025-2026 Free
+dnl Software Foundation, Inc.
 
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/c-working.m4 b/m4/c-working.m4
index d4aa9412..79b35141 100644
--- a/m4/c-working.m4
+++ b/m4/c-working.m4
@@ -1,6 +1,6 @@
 # Sanity test a C compiler.
 
-# Copyright (C) 2006, 2009-2015, 2018-2022, 2025 Free Software
+# Copyright (C) 2006, 2009-2015, 2018-2022, 2025-2026 Free Software
 # Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/m4/cxx.m4 b/m4/cxx.m4
index a3e040fa..9dc529ee 100644
--- a/m4/cxx.m4
+++ b/m4/cxx.m4
@@ -1,8 +1,8 @@
 # -*- Autoconf -*-
 # Sanity-test a C++ compiler.
 #
-# Copyright (C) 2004, 2006, 2009-2015, 2018-2022, 2025 Free Software
-# Foundation, Inc.
+# Copyright (C) 2004, 2006, 2009-2015, 2018-2022, 2025-2026 Free
+# Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/m4/flex.m4 b/m4/flex.m4
index f8691312..f7bd638a 100644
--- a/m4/flex.m4
+++ b/m4/flex.m4
@@ -1,6 +1,6 @@
 # flex.m4 serial 2
-# Copyright (C) 2012-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2012-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/src/AnnotationList.c b/src/AnnotationList.c
index 5c8175ad..6dd4b5ed 100644
--- a/src/AnnotationList.c
+++ b/src/AnnotationList.c
@@ -1,7 +1,7 @@
 /* IELR's inadequacy annotation list.
 
-   Copyright (C) 2009-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2009-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/AnnotationList.h b/src/AnnotationList.h
index fe2dd0e2..ec49f5c5 100644
--- a/src/AnnotationList.h
+++ b/src/AnnotationList.h
@@ -1,7 +1,7 @@
 /* IELR's inadequacy annotation list.
 
-   Copyright (C) 2009-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2009-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/InadequacyList.c b/src/InadequacyList.c
index 83cb8340..a7705644 100644
--- a/src/InadequacyList.c
+++ b/src/InadequacyList.c
@@ -1,7 +1,7 @@
 /* IELR's inadequacy list.
 
-   Copyright (C) 2009-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2009-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/InadequacyList.h b/src/InadequacyList.h
index f2773149..bc9f4bc7 100644
--- a/src/InadequacyList.h
+++ b/src/InadequacyList.h
@@ -1,7 +1,7 @@
 /* IELR's inadequacy list.
 
-   Copyright (C) 2009-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2009-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/Sbitset.c b/src/Sbitset.c
index db59d4aa..2a81fd2a 100644
--- a/src/Sbitset.c
+++ b/src/Sbitset.c
@@ -1,7 +1,7 @@
 /* A simple, memory-efficient bitset implementation.
 
-   Copyright (C) 2009-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2009-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/Sbitset.h b/src/Sbitset.h
index a1511659..bd163c6a 100644
--- a/src/Sbitset.h
+++ b/src/Sbitset.h
@@ -1,7 +1,7 @@
 /* A simple, memory-efficient bitset implementation.
 
-   Copyright (C) 2009-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2009-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/assoc.c b/src/assoc.c
index b9ea9019..efc8dcc8 100644
--- a/src/assoc.c
+++ b/src/assoc.c
@@ -1,6 +1,6 @@
 /* Associativity information.
 
-   Copyright (C) 2002, 2005-2006, 2008-2015, 2018-2022, 2025 Free
+   Copyright (C) 2002, 2005-2006, 2008-2015, 2018-2022, 2025-2026 Free
    Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/src/assoc.h b/src/assoc.h
index 72250e8c..570c52f9 100644
--- a/src/assoc.h
+++ b/src/assoc.h
@@ -1,7 +1,7 @@
 /* Associativity information.
 
-   Copyright (C) 2002, 2006, 2008-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2002, 2006, 2008-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/closure.c b/src/closure.c
index 67c94f2b..1802114d 100644
--- a/src/closure.c
+++ b/src/closure.c
@@ -1,7 +1,7 @@
 /* Closures for Bison
 
    Copyright (C) 1984, 1989, 2000-2002, 2004-2005, 2007, 2009-2015,
-   2018-2022, 2025 Free Software Foundation, Inc.
+   2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/closure.h b/src/closure.h
index 7628f085..c0219756 100644
--- a/src/closure.h
+++ b/src/closure.h
@@ -1,7 +1,7 @@
 /* Subroutines for bison
 
-   Copyright (C) 1984, 1989, 2000-2002, 2007, 2009-2015, 2018-2022, 2025
-   Free Software Foundation, Inc.
+   Copyright (C) 1984, 1989, 2000-2002, 2007, 2009-2015, 2018-2022,
+   2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/complain.c b/src/complain.c
index 7d7a1cd9..2da3ab6b 100644
--- a/src/complain.c
+++ b/src/complain.c
@@ -1,7 +1,7 @@
 /* Declaration for error-reporting function for Bison.
 
-   Copyright (C) 2000-2002, 2004-2006, 2009-2015, 2018-2022, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 2000-2002, 2004-2006, 2009-2015, 2018-2022, 2025-2026
+   Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/src/complain.h b/src/complain.h
index f9e1ea36..cb63127c 100644
--- a/src/complain.h
+++ b/src/complain.h
@@ -1,6 +1,6 @@
 /* Declaration for error-reporting function for Bison.
 
-   Copyright (C) 2000-2002, 2006, 2009-2015, 2018-2022, 2025 Free
+   Copyright (C) 2000-2002, 2006, 2009-2015, 2018-2022, 2025-2026 Free
    Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/src/conflicts.c b/src/conflicts.c
index 342308d8..ceed4547 100644
--- a/src/conflicts.c
+++ b/src/conflicts.c
@@ -1,6 +1,6 @@
 /* Find and resolve or report lookahead conflicts for bison,
 
-   Copyright (C) 1984, 1989, 1992, 2000-2015, 2018-2022, 2025 Free
+   Copyright (C) 1984, 1989, 1992, 2000-2015, 2018-2022, 2025-2026 Free
    Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/src/conflicts.h b/src/conflicts.h
index 8dac5db5..9391b8fe 100644
--- a/src/conflicts.h
+++ b/src/conflicts.h
@@ -1,7 +1,7 @@
 /* Find and resolve or report lookahead conflicts for bison,
 
-   Copyright (C) 2000-2002, 2004, 2007, 2009-2015, 2018-2022, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 2000-2002, 2004, 2007, 2009-2015, 2018-2022, 2025-2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/counterexample.c b/src/counterexample.c
index d46af4f1..df370806 100644
--- a/src/counterexample.c
+++ b/src/counterexample.c
@@ -1,6 +1,6 @@
 /* Conflict counterexample generation
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/counterexample.h b/src/counterexample.h
index 574181b1..72b8f7bf 100644
--- a/src/counterexample.h
+++ b/src/counterexample.h
@@ -1,6 +1,6 @@
 /* Conflict counterexample generation
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/derivation.c b/src/derivation.c
index 9032d024..2199f9c3 100644
--- a/src/derivation.c
+++ b/src/derivation.c
@@ -1,6 +1,6 @@
 /* Counterexample derivation trees
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/derivation.h b/src/derivation.h
index 95fcbb24..c194cfeb 100644
--- a/src/derivation.h
+++ b/src/derivation.h
@@ -1,6 +1,6 @@
 /* Counterexample derivation trees
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/derives.c b/src/derives.c
index cca2f932..a5a7fcbb 100644
--- a/src/derives.c
+++ b/src/derives.c
@@ -1,7 +1,7 @@
 /* Match rules with nonterminals for bison,
 
-   Copyright (C) 1984, 1989, 2000-2003, 2005, 2009-2015, 2018-2022, 2025
-   Free Software Foundation, Inc.
+   Copyright (C) 1984, 1989, 2000-2003, 2005, 2009-2015, 2018-2022,
+   2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/derives.h b/src/derives.h
index 4d4fea1b..a5d949d2 100644
--- a/src/derives.h
+++ b/src/derives.h
@@ -1,7 +1,7 @@
 /* Match rules with nonterminals for bison,
 
-   Copyright (C) 1984, 1989, 2000-2002, 2009-2015, 2018-2022, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1984, 1989, 2000-2002, 2009-2015, 2018-2022, 2025-2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/files.c b/src/files.c
index af168294..d0644a05 100644
--- a/src/files.c
+++ b/src/files.c
@@ -1,7 +1,7 @@
 /* Open and close files for Bison.
 
-   Copyright (C) 1984, 1986, 1989, 1992, 2000-2015, 2018-2022, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1984, 1986, 1989, 1992, 2000-2015, 2018-2022, 2025-2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/files.h b/src/files.h
index 686dc01c..5165c22b 100644
--- a/src/files.h
+++ b/src/files.h
@@ -1,7 +1,7 @@
 /* File names and variables for bison,
 
    Copyright (C) 1984, 1989, 2000-2002, 2006-2007, 2009-2015, 2018-2022,
-   2025 Free Software Foundation, Inc.
+   2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/fixits.c b/src/fixits.c
index 2c28631d..5f467b19 100644
--- a/src/fixits.c
+++ b/src/fixits.c
@@ -1,6 +1,6 @@
 /* Support for fixing grammar files.
 
-   Copyright (C) 2019-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2019-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/fixits.h b/src/fixits.h
index 9a23adde..2e5a6b81 100644
--- a/src/fixits.h
+++ b/src/fixits.h
@@ -1,6 +1,6 @@
 /* Support for fixing grammar files.
 
-   Copyright (C) 2019-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2019-2022, 2025-2026 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/src/flex-scanner.h b/src/flex-scanner.h
index 41eaa082..a39d28e5 100644
--- a/src/flex-scanner.h
+++ b/src/flex-scanner.h
@@ -1,6 +1,6 @@
 /* Common parts between scan-code.l, scan-gram.l, and scan-skel.l.
 
-   Copyright (C) 2006, 2009-2015, 2018-2022, 2025 Free Software
+   Copyright (C) 2006, 2009-2015, 2018-2022, 2025-2026 Free Software
    Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/src/getargs.c b/src/getargs.c
index 9e53d3f9..35cee9d5 100644
--- a/src/getargs.c
+++ b/src/getargs.c
@@ -1,7 +1,7 @@
 /* Parse command line arguments for Bison.
 
-   Copyright (C) 1984, 1986, 1989, 1992, 2000-2015, 2018-2022, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1984, 1986, 1989, 1992, 2000-2015, 2018-2022, 2025-2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/getargs.h b/src/getargs.h
index d0edce37..0ac1bf87 100644
--- a/src/getargs.h
+++ b/src/getargs.h
@@ -1,7 +1,7 @@
 /* Parse command line arguments for bison.
 
-   Copyright (C) 1984, 1986, 1989, 1992, 2000-2015, 2018-2022, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1984, 1986, 1989, 1992, 2000-2015, 2018-2022, 2025-2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/glyphs.c b/src/glyphs.c
index 75a67358..0b106ef1 100644
--- a/src/glyphs.c
+++ b/src/glyphs.c
@@ -1,6 +1,6 @@
 /* Graphical symbols.
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/glyphs.h b/src/glyphs.h
index 96e1a21e..78cbf737 100644
--- a/src/glyphs.h
+++ b/src/glyphs.h
@@ -1,6 +1,6 @@
 /* Graphical symbols.
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/gram.c b/src/gram.c
index 4ead9055..8e55f22b 100644
--- a/src/gram.c
+++ b/src/gram.c
@@ -1,7 +1,7 @@
 /* Allocate input grammar variables for Bison.
 
-   Copyright (C) 1984, 1986, 1989, 2001-2003, 2005-2015, 2018-2022, 2025
-   Free Software Foundation, Inc.
+   Copyright (C) 1984, 1986, 1989, 2001-2003, 2005-2015, 2018-2022,
+   2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/gram.h b/src/gram.h
index 62d5dbd0..f9ae2100 100644
--- a/src/gram.h
+++ b/src/gram.h
@@ -1,7 +1,7 @@
 /* Data definitions for internal representation of Bison's input.
 
    Copyright (C) 1984, 1986, 1989, 1992, 2001-2007, 2009-2015,
-   2018-2022, 2025 Free Software Foundation, Inc.
+   2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/graphviz.c b/src/graphviz.c
index d1144a23..f5104eeb 100644
--- a/src/graphviz.c
+++ b/src/graphviz.c
@@ -1,7 +1,7 @@
 /* Output Graphviz specification of a state machine generated by Bison.
 
-   Copyright (C) 2006-2007, 2009-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/graphviz.h b/src/graphviz.h
index 368b80a2..c9ff3608 100644
--- a/src/graphviz.h
+++ b/src/graphviz.h
@@ -1,6 +1,6 @@
 /* Output Graphviz specification of a state machine generated by Bison.
 
-   Copyright (C) 2006, 2010-2015, 2018-2022, 2025 Free Software
+   Copyright (C) 2006, 2010-2015, 2018-2022, 2025-2026 Free Software
    Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/src/ielr.c b/src/ielr.c
index 94fe48f5..879f869d 100644
--- a/src/ielr.c
+++ b/src/ielr.c
@@ -1,7 +1,7 @@
 /* IELR main implementation.
 
-   Copyright (C) 2009-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2009-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/ielr.h b/src/ielr.h
index 00b5f026..c563f538 100644
--- a/src/ielr.h
+++ b/src/ielr.h
@@ -1,7 +1,7 @@
 /* IELR main implementation.
 
-   Copyright (C) 2009-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2009-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/lalr.c b/src/lalr.c
index 8a27de20..f1e4de18 100644
--- a/src/lalr.c
+++ b/src/lalr.c
@@ -1,6 +1,6 @@
 /* Compute lookahead criteria for Bison.
 
-   Copyright (C) 1984, 1986, 1989, 2000-2015, 2018-2022, 2025 Free
+   Copyright (C) 1984, 1986, 1989, 2000-2015, 2018-2022, 2025-2026 Free
    Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/src/lalr.h b/src/lalr.h
index bd27778c..4b9630ab 100644
--- a/src/lalr.h
+++ b/src/lalr.h
@@ -1,7 +1,7 @@
 /* Compute lookahead criteria for bison,
 
    Copyright (C) 1984, 1986, 1989, 2000, 2002, 2004, 2006-2007,
-   2009-2015, 2018-2022, 2025 Free Software Foundation, Inc.
+   2009-2015, 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/local.mk b/src/local.mk
index 1bdcbf4c..cbd538a6 100644
--- a/src/local.mk
+++ b/src/local.mk
@@ -1,5 +1,5 @@
-## Copyright (C) 2001-2015, 2018-2022, 2025 Free Software Foundation,
-## Inc.
+## Copyright (C) 2001-2015, 2018-2022, 2025-2026 Free Software
+## Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/src/location.c b/src/location.c
index fec88d8f..9a5d5665 100644
--- a/src/location.c
+++ b/src/location.c
@@ -1,6 +1,6 @@
 /* Locations for Bison
 
-   Copyright (C) 2002, 2005-2015, 2018-2022, 2025 Free Software
+   Copyright (C) 2002, 2005-2015, 2018-2022, 2025-2026 Free Software
    Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/src/location.h b/src/location.h
index 4c2497b0..5e7e8711 100644
--- a/src/location.h
+++ b/src/location.h
@@ -1,6 +1,6 @@
 /* Locations for Bison
 
-   Copyright (C) 2002, 2004-2015, 2018-2022, 2025 Free Software
+   Copyright (C) 2002, 2004-2015, 2018-2022, 2025-2026 Free Software
    Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/src/lr0.c b/src/lr0.c
index 87b75cfe..ff978c04 100644
--- a/src/lr0.c
+++ b/src/lr0.c
@@ -1,7 +1,7 @@
 /* Generate the LR(0) parser states for Bison.
 
-   Copyright (C) 1984, 1986, 1989, 2000-2002, 2004-2015, 2018-2022, 2025
-   Free Software Foundation, Inc.
+   Copyright (C) 1984, 1986, 1989, 2000-2002, 2004-2015, 2018-2022,
+   2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/lr0.h b/src/lr0.h
index 5a76ac1c..36f6b417 100644
--- a/src/lr0.h
+++ b/src/lr0.h
@@ -1,7 +1,7 @@
 /* Generate the LR(0) parser states for Bison.
 
-   Copyright (C) 1984, 1986, 1989, 2000-2002, 2009-2015, 2018-2022, 2025
-   Free Software Foundation, Inc.
+   Copyright (C) 1984, 1986, 1989, 2000-2002, 2009-2015, 2018-2022,
+   2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/lssi.c b/src/lssi.c
index 564c4e67..8aa8431b 100644
--- a/src/lssi.c
+++ b/src/lssi.c
@@ -1,6 +1,6 @@
 /* Lookahead sensitive state item searches for counterexample generation
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/lssi.h b/src/lssi.h
index 15ca51db..c7a64e11 100644
--- a/src/lssi.h
+++ b/src/lssi.h
@@ -1,6 +1,6 @@
 /* Lookahead sensitive state item searches for counterexample generation
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/main.c b/src/main.c
index a61f1202..82e95868 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,7 +1,7 @@
 /* Top level entry point of Bison.
 
    Copyright (C) 1984, 1986, 1989, 1992, 1995, 2000-2002, 2004-2015,
-   2018-2022, 2025 Free Software Foundation, Inc.
+   2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/muscle-tab.c b/src/muscle-tab.c
index ffcca814..41a7b133 100644
--- a/src/muscle-tab.c
+++ b/src/muscle-tab.c
@@ -1,7 +1,7 @@
 /* Muscle table manager for Bison.
 
-   Copyright (C) 2001-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2001-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/muscle-tab.h b/src/muscle-tab.h
index 75ce22ad..e251756c 100644
--- a/src/muscle-tab.h
+++ b/src/muscle-tab.h
@@ -1,7 +1,7 @@
 /* Muscle table manager for Bison,
 
-   Copyright (C) 2001-2003, 2006-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/named-ref.c b/src/named-ref.c
index d9df1a8d..8719b893 100644
--- a/src/named-ref.c
+++ b/src/named-ref.c
@@ -1,7 +1,7 @@
 /* Named symbol references for Bison
 
-   Copyright (C) 2009-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2009-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/named-ref.h b/src/named-ref.h
index ccd17e9c..560e69ab 100644
--- a/src/named-ref.h
+++ b/src/named-ref.h
@@ -1,7 +1,7 @@
 /* Named symbol references for Bison
 
-   Copyright (C) 2009-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2009-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/nullable.c b/src/nullable.c
index 8314f5a8..527b4f90 100644
--- a/src/nullable.c
+++ b/src/nullable.c
@@ -1,7 +1,7 @@
 /* Calculate which nonterminals can expand into the null string for Bison.
 
-   Copyright (C) 1984, 1989, 2000-2006, 2009-2015, 2018-2022, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1984, 1989, 2000-2006, 2009-2015, 2018-2022, 2025-2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/nullable.h b/src/nullable.h
index 9a6b07b8..3238c469 100644
--- a/src/nullable.h
+++ b/src/nullable.h
@@ -1,7 +1,7 @@
 /* Part of the bison parser generator,
 
-   Copyright (C) 2000, 2002, 2009-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2000, 2002, 2009-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/output.c b/src/output.c
index 5963714d..5e452a77 100644
--- a/src/output.c
+++ b/src/output.c
@@ -1,7 +1,7 @@
 /* Output the generated parsing program for Bison.
 
-   Copyright (C) 1984, 1986, 1989, 1992, 2000-2015, 2018-2022, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1984, 1986, 1989, 1992, 2000-2015, 2018-2022, 2025-2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/output.h b/src/output.h
index 848b528a..0dadd1a3 100644
--- a/src/output.h
+++ b/src/output.h
@@ -1,7 +1,7 @@
 /* Output the generated parsing program for bison,
 
-   Copyright (C) 2000-2003, 2006-2007, 2009-2015, 2018-2022, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 2000-2003, 2006-2007, 2009-2015, 2018-2022, 2025-2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/parse-gram.c b/src/parse-gram.c
index 2c1c93cf..9ebc1c41 100644
--- a/src/parse-gram.c
+++ b/src/parse-gram.c
@@ -2,7 +2,7 @@
 
 /* Bison implementation for Yacc-like parsers in C
 
-   Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2022, 2025 Free
+   Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2022, 2025-2026 Free
    Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/src/parse-gram.y b/src/parse-gram.y
index f467b813..d38b16cd 100644
--- a/src/parse-gram.y
+++ b/src/parse-gram.y
@@ -1,7 +1,7 @@
 /* Bison Grammar Parser                             -*- C -*-
 
-   Copyright (C) 2002-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2002-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/parse-simulation.c b/src/parse-simulation.c
index 3fe95f1f..55013acb 100644
--- a/src/parse-simulation.c
+++ b/src/parse-simulation.c
@@ -1,6 +1,6 @@
 /* Parser simulator for unifying counterexample search
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/parse-simulation.h b/src/parse-simulation.h
index ea2db773..82ad7529 100644
--- a/src/parse-simulation.h
+++ b/src/parse-simulation.h
@@ -1,6 +1,6 @@
 /* Parser simulator for unifying counterexample search
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/print-graph.c b/src/print-graph.c
index 59f05e0f..408caa2d 100644
--- a/src/print-graph.c
+++ b/src/print-graph.c
@@ -1,7 +1,7 @@
 /* Output a graph of the generated parser, for Bison.
 
-   Copyright (C) 2001-2007, 2009-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2001-2007, 2009-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/print-graph.h b/src/print-graph.h
index d0f2b06f..8f2d8a31 100644
--- a/src/print-graph.h
+++ b/src/print-graph.h
@@ -1,7 +1,7 @@
 /* Output a graph of the generated parser, for Bison.
 
-   Copyright (C) 2000, 2006, 2009-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2000, 2006, 2009-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/print-xml.c b/src/print-xml.c
index f5fd0948..8da6da0d 100644
--- a/src/print-xml.c
+++ b/src/print-xml.c
@@ -1,6 +1,6 @@
 /* Print an xml on generated parser, for Bison,
 
-   Copyright (C) 2007, 2009-2015, 2018-2022, 2025 Free Software
+   Copyright (C) 2007, 2009-2015, 2018-2022, 2025-2026 Free Software
    Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/src/print-xml.h b/src/print-xml.h
index 5085eaf1..e70309da 100644
--- a/src/print-xml.h
+++ b/src/print-xml.h
@@ -1,6 +1,6 @@
 /* Output an xml of the generated parser, for Bison.
 
-   Copyright (C) 2007, 2009-2015, 2018-2022, 2025 Free Software
+   Copyright (C) 2007, 2009-2015, 2018-2022, 2025-2026 Free Software
    Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/src/print.c b/src/print.c
index b005901a..40c00ef7 100644
--- a/src/print.c
+++ b/src/print.c
@@ -1,7 +1,7 @@
 /* Print information on generated parser, for bison,
 
    Copyright (C) 1984, 1986, 1989, 2000-2005, 2007, 2009-2015,
-   2018-2022, 2025 Free Software Foundation, Inc.
+   2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/print.h b/src/print.h
index cc182555..2c8462df 100644
--- a/src/print.h
+++ b/src/print.h
@@ -1,6 +1,6 @@
 /* Print information on generated parser, for bison,
 
-   Copyright (C) 2000, 2009-2015, 2018-2022, 2025 Free Software
+   Copyright (C) 2000, 2009-2015, 2018-2022, 2025-2026 Free Software
    Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/src/reader.c b/src/reader.c
index 7ba438dc..862d7293 100644
--- a/src/reader.c
+++ b/src/reader.c
@@ -1,7 +1,7 @@
 /* Input parser for Bison
 
    Copyright (C) 1984, 1986, 1989, 1992, 1998, 2000-2003, 2005-2007,
-   2009-2015, 2018-2022, 2025 Free Software Foundation, Inc.
+   2009-2015, 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/reader.h b/src/reader.h
index eeeaec52..76ffee55 100644
--- a/src/reader.h
+++ b/src/reader.h
@@ -1,7 +1,7 @@
 /* Input parser for Bison
 
-   Copyright (C) 2000-2003, 2005-2007, 2009-2015, 2018-2022, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 2000-2003, 2005-2007, 2009-2015, 2018-2022, 2025-2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/reduce.c b/src/reduce.c
index 859c4568..aeecc4ba 100644
--- a/src/reduce.c
+++ b/src/reduce.c
@@ -1,7 +1,7 @@
 /* Grammar reduction for Bison.
 
-   Copyright (C) 1988-1989, 2000-2003, 2005-2015, 2018-2022, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1988-1989, 2000-2003, 2005-2015, 2018-2022, 2025-2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/reduce.h b/src/reduce.h
index 2bdce739..2a1d5ef2 100644
--- a/src/reduce.h
+++ b/src/reduce.h
@@ -1,6 +1,6 @@
 /* Grammar reduction for Bison.
 
-   Copyright (C) 2000-2002, 2007, 2009-2015, 2018-2022, 2025 Free
+   Copyright (C) 2000-2002, 2007, 2009-2015, 2018-2022, 2025-2026 Free
    Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/src/relation.c b/src/relation.c
index c1c1462c..fadc36b3 100644
--- a/src/relation.c
+++ b/src/relation.c
@@ -1,6 +1,6 @@
 /* Binary relations.
 
-   Copyright (C) 2002, 2004-2005, 2009-2015, 2018-2022, 2025 Free
+   Copyright (C) 2002, 2004-2005, 2009-2015, 2018-2022, 2025-2026 Free
    Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/src/relation.h b/src/relation.h
index 96d0d7b3..61c11e14 100644
--- a/src/relation.h
+++ b/src/relation.h
@@ -1,7 +1,7 @@
 /* Binary relations.
 
-   Copyright (C) 2002, 2004, 2009-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2002, 2004, 2009-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/scan-code.h b/src/scan-code.h
index 35305623..2a091aa0 100644
--- a/src/scan-code.h
+++ b/src/scan-code.h
@@ -1,7 +1,7 @@
 /* Bison code properties structure and scanner.
 
-   Copyright (C) 2006-2007, 2009-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/scan-code.l b/src/scan-code.l
index dbdce804..c8b5b447 100644
--- a/src/scan-code.l
+++ b/src/scan-code.l
@@ -1,7 +1,7 @@
 /* Bison Action Scanner                             -*- C -*-
 
-   Copyright (C) 2006-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2006-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/scan-gram.h b/src/scan-gram.h
index 7fb432d9..1a194f6a 100644
--- a/src/scan-gram.h
+++ b/src/scan-gram.h
@@ -1,7 +1,7 @@
 /* Bison Grammar Scanner
 
-   Copyright (C) 2006-2007, 2009-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/scan-gram.l b/src/scan-gram.l
index 5f3ff1f3..3f80b7c8 100644
--- a/src/scan-gram.l
+++ b/src/scan-gram.l
@@ -1,7 +1,7 @@
 /* Bison Grammar Scanner                             -*- C -*-
 
-   Copyright (C) 2002-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2002-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/scan-skel.h b/src/scan-skel.h
index faf9fb0c..b04acf99 100644
--- a/src/scan-skel.h
+++ b/src/scan-skel.h
@@ -1,7 +1,7 @@
 /* Scan Bison Skeletons.
 
-   Copyright (C) 2005-2007, 2009-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2005-2007, 2009-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/scan-skel.l b/src/scan-skel.l
index 2733eb29..fc611abc 100644
--- a/src/scan-skel.l
+++ b/src/scan-skel.l
@@ -1,7 +1,7 @@
 /* Scan Bison Skeletons.                                       -*- C -*-
 
-   Copyright (C) 2001-2015, 2018-2022, 2025 Free Software Foundation,
-   Inc.
+   Copyright (C) 2001-2015, 2018-2022, 2025-2026 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/state-item.c b/src/state-item.c
index 84d7339e..ff53a830 100644
--- a/src/state-item.c
+++ b/src/state-item.c
@@ -1,6 +1,6 @@
 /* Counterexample Generation Search Nodes
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/state-item.h b/src/state-item.h
index 1f613f0a..d13b8266 100644
--- a/src/state-item.h
+++ b/src/state-item.h
@@ -1,6 +1,6 @@
 /* Counterexample Generation Search Nodes
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/state.c b/src/state.c
index 42b4ae54..beb730ef 100644
--- a/src/state.c
+++ b/src/state.c
@@ -1,7 +1,7 @@
 /* Type definitions for the finite state machine for Bison.
 
-   Copyright (C) 2001-2007, 2009-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2001-2007, 2009-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/state.h b/src/state.h
index 4efaaf23..92ca0609 100644
--- a/src/state.h
+++ b/src/state.h
@@ -1,7 +1,7 @@
 /* Type definitions for the finite state machine for Bison.
 
-   Copyright (C) 1984, 1989, 2000-2004, 2007, 2009-2015, 2018-2022, 2025
-   Free Software Foundation, Inc.
+   Copyright (C) 1984, 1989, 2000-2004, 2007, 2009-2015, 2018-2022,
+   2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/strversion.c b/src/strversion.c
index 030bcb2a..b1f39064 100644
--- a/src/strversion.c
+++ b/src/strversion.c
@@ -1,6 +1,6 @@
 /* Convert version string to int.
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/strversion.h b/src/strversion.h
index 825c466b..fa6823a2 100644
--- a/src/strversion.h
+++ b/src/strversion.h
@@ -1,6 +1,6 @@
 /* Convert version string to int.
 
-   Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/symlist.c b/src/symlist.c
index 88ffb50a..f350aa28 100644
--- a/src/symlist.c
+++ b/src/symlist.c
@@ -1,6 +1,6 @@
 /* Lists of symbols for Bison
 
-   Copyright (C) 2002, 2005-2007, 2009-2015, 2018-2022, 2025 Free
+   Copyright (C) 2002, 2005-2007, 2009-2015, 2018-2022, 2025-2026 Free
    Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/src/symlist.h b/src/symlist.h
index 537426aa..2db8ced1 100644
--- a/src/symlist.h
+++ b/src/symlist.h
@@ -1,6 +1,6 @@
 /* Lists of symbols for Bison
 
-   Copyright (C) 2002, 2005-2007, 2009-2015, 2018-2022, 2025 Free
+   Copyright (C) 2002, 2005-2007, 2009-2015, 2018-2022, 2025-2026 Free
    Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
diff --git a/src/symtab.c b/src/symtab.c
index ab8d7bcc..a3bee321 100644
--- a/src/symtab.c
+++ b/src/symtab.c
@@ -1,7 +1,7 @@
 /* Symbol table manager for Bison.
 
-   Copyright (C) 1984, 1989, 2000-2002, 2004-2015, 2018-2022, 2025 Free
-   Software Foundation, Inc.
+   Copyright (C) 1984, 1989, 2000-2002, 2004-2015, 2018-2022, 2025-2026
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/symtab.h b/src/symtab.h
index 2cf9d4bc..0fdca3bd 100644
--- a/src/symtab.h
+++ b/src/symtab.h
@@ -1,7 +1,7 @@
 /* Definitions for symtab.c and callers, part of Bison.
 
-   Copyright (C) 1984, 1989, 1992, 2000-2002, 2004-2015, 2018-2022, 2025
-   Free Software Foundation, Inc.
+   Copyright (C) 1984, 1989, 1992, 2000-2002, 2004-2015, 2018-2022,
+   2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/system.h b/src/system.h
index 9fcc4723..2df3965d 100644
--- a/src/system.h
+++ b/src/system.h
@@ -1,7 +1,7 @@
 /* System-dependent definitions for Bison.
 
-   Copyright (C) 2000-2007, 2009-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2000-2007, 2009-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/src/tables.c b/src/tables.c
index d54c8f9d..97d2ccab 100644
--- a/src/tables.c
+++ b/src/tables.c
@@ -1,7 +1,7 @@
 /* Output the generated parsing program for Bison.
 
    Copyright (C) 1984, 1986, 1989, 1992, 2000-2006, 2009-2015,
-   2018-2022, 2025 Free Software Foundation, Inc.
+   2018-2022, 2025-2026 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/tables.h b/src/tables.h
index 2d0b01bf..26cba3f4 100644
--- a/src/tables.h
+++ b/src/tables.h
@@ -1,7 +1,7 @@
 /* Prepare the LALR and GLR parser tables.
 
-   Copyright (C) 2002, 2004, 2009-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2002, 2004, 2009-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/uniqstr.c b/src/uniqstr.c
index 6e9afb4d..86a6bd4b 100644
--- a/src/uniqstr.c
+++ b/src/uniqstr.c
@@ -1,7 +1,7 @@
 /* Keep a unique copy of strings.
 
-   Copyright (C) 2002-2005, 2009-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2002-2005, 2009-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/src/uniqstr.h b/src/uniqstr.h
index 3d687b49..b8c88fcc 100644
--- a/src/uniqstr.h
+++ b/src/uniqstr.h
@@ -1,7 +1,7 @@
 /* Keeping a unique copy of strings.
 
-   Copyright (C) 2002-2003, 2008-2015, 2018-2022, 2025 Free Software
-   Foundation, Inc.
+   Copyright (C) 2002-2003, 2008-2015, 2018-2022, 2025-2026 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
diff --git a/tests/actions.at b/tests/actions.at
index 277eea07..990c7205 100644
--- a/tests/actions.at
+++ b/tests/actions.at
@@ -1,7 +1,7 @@
 # Executing Actions.                               -*- Autotest -*-
 
-# Copyright (C) 2001-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2001-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/atlocal.in b/tests/atlocal.in
index 76a5f360..2174d187 100644
--- a/tests/atlocal.in
+++ b/tests/atlocal.in
@@ -1,8 +1,8 @@
 # @configure_input@                                     -*- shell-script -*-
 # Configurable variable values for Bison test suite.
 
-# Copyright (C) 2000-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2000-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/bison.in b/tests/bison.in
index 4cdbbbb3..70c09e42 100644
--- a/tests/bison.in
+++ b/tests/bison.in
@@ -2,8 +2,8 @@
 # @configure_input@
 # Wrapper around a non installed bison to make it work as an installed one.
 
-# Copyright (C) 2001-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2001-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/c++.at b/tests/c++.at
index 3a60fea4..0dfa613f 100644
--- a/tests/c++.at
+++ b/tests/c++.at
@@ -1,6 +1,6 @@
 # Checking the C++ Features.                    -*- Autotest -*-
 
-# Copyright (C) 2004-2005, 2007-2015, 2018-2022, 2025 Free Software
+# Copyright (C) 2004-2005, 2007-2015, 2018-2022, 2025-2026 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/calc.at b/tests/calc.at
index 9e6d8661..85a6925c 100644
--- a/tests/calc.at
+++ b/tests/calc.at
@@ -1,7 +1,7 @@
 # Simple calculator.                         -*- Autotest -*-
 
-# Copyright (C) 2000-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2000-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/conflicts.at b/tests/conflicts.at
index 8f035f01..c3bae74f 100644
--- a/tests/conflicts.at
+++ b/tests/conflicts.at
@@ -1,6 +1,6 @@
 # Exercising Bison on conflicts.                         -*- Autotest -*-
 
-# Copyright (C) 2002-2005, 2007-2015, 2018-2022, 2025 Free Software
+# Copyright (C) 2002-2005, 2007-2015, 2018-2022, 2025-2026 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/counterexample.at b/tests/counterexample.at
index f87e2df2..331d20e8 100644
--- a/tests/counterexample.at
+++ b/tests/counterexample.at
@@ -1,6 +1,6 @@
 # Exercising Bison on counterexamples.                         -*- Autotest -*-
 
-# Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/cxx-type.at b/tests/cxx-type.at
index 66442888..8e05923c 100644
--- a/tests/cxx-type.at
+++ b/tests/cxx-type.at
@@ -1,7 +1,7 @@
 # Checking GLR Parsing.                         -*- Autotest -*-
 
-# Copyright (C) 2002-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2002-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/d.at b/tests/d.at
index 9996671c..8ae49abe 100644
--- a/tests/d.at
+++ b/tests/d.at
@@ -1,6 +1,6 @@
 # D features tests.                      -*- Autotest -*-
 
-# Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/diagnostics.at b/tests/diagnostics.at
index a6e9aa2b..38c86b4f 100644
--- a/tests/diagnostics.at
+++ b/tests/diagnostics.at
@@ -1,6 +1,6 @@
 # Checking diagnostics.                              -*- Autotest -*-
 
-# Copyright (C) 2019-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2019-2022, 2025-2026 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/existing.at b/tests/existing.at
index 86a6a810..3497b154 100644
--- a/tests/existing.at
+++ b/tests/existing.at
@@ -1,7 +1,7 @@
 # Exercising Bison on actual grammars.                   -*- Autotest -*-
 
-# Copyright (C) 1989-1992, 2000-2005, 2007, 2009-2015, 2018-2022, 2025
-# Free Software Foundation, Inc.
+# Copyright (C) 1989-1992, 2000-2005, 2007, 2009-2015, 2018-2022,
+# 2025-2026 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/glr-regression.at b/tests/glr-regression.at
index 4482496e..ff9ff6fa 100644
--- a/tests/glr-regression.at
+++ b/tests/glr-regression.at
@@ -1,7 +1,7 @@
 # Checking GLR Parsing: Regression Tests           -*- Autotest -*-
 
-# Copyright (C) 2002-2003, 2005-2007, 2009-2015, 2018-2022, 2025 Free
-# Software Foundation, Inc.
+# Copyright (C) 2002-2003, 2005-2007, 2009-2015, 2018-2022, 2025-2026
+# Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/headers.at b/tests/headers.at
index 1b370303..3e3f40fa 100644
--- a/tests/headers.at
+++ b/tests/headers.at
@@ -1,7 +1,7 @@
 # Bison Parser Headers.                               -*- Autotest -*-
 
-# Copyright (C) 2001-2002, 2006-2007, 2009-2015, 2018-2022, 2025 Free
-# Software Foundation, Inc.
+# Copyright (C) 2001-2002, 2006-2007, 2009-2015, 2018-2022, 2025-2026
+# Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/input.at b/tests/input.at
index 44393bcc..a21956fc 100644
--- a/tests/input.at
+++ b/tests/input.at
@@ -1,7 +1,7 @@
 # Checking the Bison reader.                    -*- Autotest -*-
 
-# Copyright (C) 2002-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2002-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/java.at b/tests/java.at
index 43c8b0e9..35970c50 100644
--- a/tests/java.at
+++ b/tests/java.at
@@ -1,7 +1,7 @@
 # Java tests for simple calculator.           -*- Autotest -*-
 
-# Copyright (C) 2007-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2007-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/javapush.at b/tests/javapush.at
index 4bd09e7e..faab12f5 100644
--- a/tests/javapush.at
+++ b/tests/javapush.at
@@ -1,7 +1,7 @@
 # Checking Java Push Parsing.                            -*- Autotest -*-
 
-# Copyright (C) 2013-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2013-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/linear b/tests/linear
index 7d17efe7..e930683a 100755
--- a/tests/linear
+++ b/tests/linear
@@ -3,7 +3,7 @@
 # Build a grammar whose LALR(1) parser has a given number of states.
 # Useful to test edge cases (e.g., 256 and 257 states, etc.).
 
-# Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/local.at b/tests/local.at
index a3601bd6..824496b8 100644
--- a/tests/local.at
+++ b/tests/local.at
@@ -2,8 +2,8 @@
 
 # Macros for the GNU Bison Test suite.
 
-# Copyright (C) 2003-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2003-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/local.mk b/tests/local.mk
index 20aeb4ff..10a4a969 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -1,7 +1,7 @@
 ## Makefile for Bison testsuite.
 
-## Copyright (C) 2000-2015, 2018-2022, 2025 Free Software Foundation,
-## Inc.
+## Copyright (C) 2000-2015, 2018-2022, 2025-2026 Free Software
+## Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/tests/m4.at b/tests/m4.at
index 5078554c..87bd179d 100644
--- a/tests/m4.at
+++ b/tests/m4.at
@@ -1,6 +1,6 @@
 # Basic m4 macros.                               -*- Autotest -*-
 
-# Copyright (C) 2020-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2020-2022, 2025-2026 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/named-refs.at b/tests/named-refs.at
index 6d9dd37c..d6e2a601 100644
--- a/tests/named-refs.at
+++ b/tests/named-refs.at
@@ -1,7 +1,7 @@
 # Named references test.                           -*- Autotest -*-
 
-# Copyright (C) 2009-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2009-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/output.at b/tests/output.at
index 81689898..f7157c62 100644
--- a/tests/output.at
+++ b/tests/output.at
@@ -1,6 +1,6 @@
 # Checking the output filenames.                    -*- Autotest -*-
 
-# Copyright (C) 2000-2002, 2005-2015, 2018-2022, 2025 Free Software
+# Copyright (C) 2000-2002, 2005-2015, 2018-2022, 2025-2026 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/push.at b/tests/push.at
index fb452638..b99821fe 100644
--- a/tests/push.at
+++ b/tests/push.at
@@ -1,6 +1,6 @@
 # Checking Push Parsing.                            -*- Autotest -*-
 
-# Copyright (C) 2007, 2009-2015, 2018-2022, 2025 Free Software
+# Copyright (C) 2007, 2009-2015, 2018-2022, 2025-2026 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/reduce.at b/tests/reduce.at
index 16833898..70b9c92f 100644
--- a/tests/reduce.at
+++ b/tests/reduce.at
@@ -1,6 +1,6 @@
 # Exercising Bison Grammar Reduction.                      -*- Autotest -*-
 
-# Copyright (C) 2001-2002, 2007-2015, 2018-2022, 2025 Free Software
+# Copyright (C) 2001-2002, 2007-2015, 2018-2022, 2025-2026 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/regression.at b/tests/regression.at
index 2b7e05da..85681e8f 100644
--- a/tests/regression.at
+++ b/tests/regression.at
@@ -1,7 +1,7 @@
 # Bison Regressions.                               -*- Autotest -*-
 
-# Copyright (C) 2001-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2001-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/report.at b/tests/report.at
index 05256810..00010ab3 100644
--- a/tests/report.at
+++ b/tests/report.at
@@ -1,6 +1,6 @@
 # Bison Reports.                               -*- Autotest -*-
 
-# Copyright (C) 2018-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022, 2025-2026 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/scanner.at b/tests/scanner.at
index 91820c1f..fa82d59d 100644
--- a/tests/scanner.at
+++ b/tests/scanner.at
@@ -1,6 +1,6 @@
 # Interface with the scanner.                           -*- Autotest -*-
 
-# Copyright (C) 2019-2022, 2025 Free Software Foundation, Inc.
+# Copyright (C) 2019-2022, 2025-2026 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/sets.at b/tests/sets.at
index 10bfbca7..8a5123fb 100644
--- a/tests/sets.at
+++ b/tests/sets.at
@@ -1,7 +1,7 @@
 # Exercising Bison Grammar Sets.                      -*- Autotest -*-
 
-# Copyright (C) 2001-2002, 2005, 2007, 2009-2015, 2018-2022, 2025 Free
-# Software Foundation, Inc.
+# Copyright (C) 2001-2002, 2005, 2007, 2009-2015, 2018-2022, 2025-2026
+# Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/skeletons.at b/tests/skeletons.at
index ad67ffd2..d3d10777 100644
--- a/tests/skeletons.at
+++ b/tests/skeletons.at
@@ -1,6 +1,6 @@
 # Checking skeleton support.                     -*- Autotest -*-
 
-# Copyright (C) 2007, 2009-2015, 2018-2022, 2025 Free Software
+# Copyright (C) 2007, 2009-2015, 2018-2022, 2025-2026 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/synclines.at b/tests/synclines.at
index 049c2e85..c3de971c 100644
--- a/tests/synclines.at
+++ b/tests/synclines.at
@@ -1,7 +1,7 @@
 # Executing Actions.                               -*- Autotest -*-
 
-# Copyright (C) 2002, 2004-2005, 2007, 2009-2015, 2018-2022, 2025 Free
-# Software Foundation, Inc.
+# Copyright (C) 2002, 2004-2005, 2007, 2009-2015, 2018-2022, 2025-2026
+# Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/testsuite.at b/tests/testsuite.at
index b92dbf98..87299f67 100644
--- a/tests/testsuite.at
+++ b/tests/testsuite.at
@@ -1,7 +1,7 @@
 # Test suite for GNU Bison.                             -*- Autotest -*-
 
-# Copyright (C) 2000-2004, 2006-2007, 2009-2015, 2018-2022, 2025 Free
-# Software Foundation, Inc.
+# Copyright (C) 2000-2004, 2006-2007, 2009-2015, 2018-2022, 2025-2026
+# Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/torture.at b/tests/torture.at
index 01d5938e..73f59e64 100644
--- a/tests/torture.at
+++ b/tests/torture.at
@@ -1,7 +1,7 @@
 # Torturing Bison.                                    -*- Autotest -*-
 
-# Copyright (C) 2001-2002, 2004-2007, 2009-2015, 2018-2022, 2025 Free
-# Software Foundation, Inc.
+# Copyright (C) 2001-2002, 2004-2007, 2009-2015, 2018-2022, 2025-2026
+# Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/types.at b/tests/types.at
index 36a586b9..e554e1b7 100644
--- a/tests/types.at
+++ b/tests/types.at
@@ -1,7 +1,7 @@
 # Value type.                                     -*- Autotest -*-
 
-# Copyright (C) 2013-2015, 2018-2022, 2025 Free Software Foundation,
-# Inc.
+# Copyright (C) 2013-2015, 2018-2022, 2025-2026 Free Software
+# Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by