diff --git a/ChangeLog b/ChangeLog
index 8ff6afcf..0737aab6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -4,6 +4,9 @@
 	DOT format, not VCG format.
 	* doc/bison.1: Likewise.
 	* doc/bison.texinfo (Understanding, Bison Options): Likewise.
+	* THANKS: Add Satya Kiran Popuri, who proposed the initial version
+	of this change in
+	<http://lists.gnu.org/archive/html/bison-patches/2006-09/msg00158.html>.
 	* TODO: Remove Graphviz entry.
 	* src/Makefile.am (bison_SOURCES): Add graphviz.c and graphviz.h;
 	remove vcg.c, vcg.h, vcg_defaults.h.
diff --git a/THANKS b/THANKS
index ddc54adb..058b1037 100644
--- a/THANKS
+++ b/THANKS
@@ -69,6 +69,7 @@ R Blake                   blakers@mac.com
 Raja R Harinath           harinath@cs.umn.edu
 Richard Stallman          rms@gnu.org
 Robert Anisko             anisko_r@epita.fr
+Satya Kiran Popuri        satyakiran@gmail.com
 Shura                     debil_urod@ngs.ru
 Steve Murphy              murf@parsetree.com
 Tim Josling               tej@melbpc.org.au