diff --git a/ChangeLog b/ChangeLog
index 44512d2a..40b26792 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2009-04-13  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	* Release 1.3.1
+
 2009-04-13  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Bump up version number to 1.3.1