diff --git a/ChangeLog b/ChangeLog
index 50a0a9f..4d385ce 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2013-09-16 v3.1.0
+	* API breaks backward compatibility.
+	* Supporting sandbox sharing.
+
 2013-09-16 v3.0.2
 	* Fixing a bug of "dist/build/autogen/cabal_macros.h".