diff --git a/ChangeLog b/ChangeLog
index 8d64200427..9d05756f2f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Wed Sep 28 04:10:46 2011  Ayumu AIZAWA  <ayumu.aizawa@gmail.com>
+
+	* ext/bigdecimal/README: update report to.
+
 Tue Sep 28 04:05:00 2011  Kenta Murata  <mrkn@mrkn.jp>
 
 	* ext/bigdecimal/bigdecimal_en.html: removed because this file isn't
diff --git a/ext/bigdecimal/README b/ext/bigdecimal/README
index ae65b014cf..ffebe1f282 100644
--- a/ext/bigdecimal/README
+++ b/ext/bigdecimal/README
@@ -51,10 +51,10 @@ You can redistribute it and/or modify it under either the terms of the GPL
 
 * The Author
 
-Feel free to send comments and bug reports to the author.  Here is the
-author's latest mail address:
+Feel free to send comments and bug reports to the ruby-core team.
 
-  shigeo@tinyforest.gr.jp
+  http://redmine.ruby-lamg.org
 
 -------------------------------------------------------
 created at: Thu Dec 22 1999
+updated at: Wed Sep 28 2011