diff --git a/Makefile.in b/Makefile.in
index ad7150b9..f1885018 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,5 +1,5 @@
 # Makefile for bison
-# Copyright (C) 1984, 1989, 1991 Bob Corbett and Free Software Foundation, Inc.
+# Copyright (C) 1988, 1989, 1991, 1993 Bob Corbett and Free Software Foundation, Inc.
 # 
 # This file is part of Bison, the GNU Compiler Compiler.
 #