diff --git a/ChangeLog b/ChangeLog
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@@ -1,3 +1,7 @@
+Wed Nov 11 12:53:25 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* hash.c (ruby_setenv): use ruby_strdup().
+
 Wed Nov 11 12:19:27 2009  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* hash.c (ruby_setenv): also set CRT workarea.  ref [ruby-core:25010]