diff --git a/HISTORY.md b/HISTORY.md
index 828a8a00..9d39efaf 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,4 +1,4 @@
-Dev version
+v0.3.1 (2014-6-16)
 -----------
 * Bugfix: lua mongo driver . Hold reply string before decode bson data.
 * More check in bson decoding.