diff --git a/README.rst b/README.rst
index 1da6ece..5c0829a 100644
--- a/README.rst
+++ b/README.rst
@@ -3,8 +3,8 @@ MessagePack Python Binding
 ===========================
 
 :author: INADA Naoki
-:version: 0.2.0
-:date: 2012-06-27
+:version: 0.2.3
+:date: 2012-12-11
 
 HOW TO USE
 -----------
diff --git a/msgpack/_version.py b/msgpack/_version.py
index 9bffd02..1bbdf2a 100644
--- a/msgpack/_version.py
+++ b/msgpack/_version.py
@@ -1 +1 @@
-version = (0, 2, 3, 'dev1')
+version = (0, 2, 3)