diff --git a/CHANGES.erp5.util.txt b/CHANGES.erp5.util.txt
index a047ea992dbb64620e624dd699e0662afd7fb0cc..c7c5ee78b9f124e31252f2abf791575227456e63 100644
--- a/CHANGES.erp5.util.txt
+++ b/CHANGES.erp5.util.txt
@@ -1,6 +1,11 @@
 Changes
 =======
 
+0.4 (unreleased)
+----------------
+
+ * No changes yet.
+
 0.3 (2011-12-23)
 ----------------
 
diff --git a/setup.py b/setup.py
index 6c415c8428c3d2ca440c0434243b830b65cfe480..12d44c19928a1a5eb2eb35f23e485b3a02564805 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@ from setuptools import setup, find_packages
 import glob
 import os
 
-version = '0.3'
+version = '0.4-dev'
 name = 'erp5.util'
 long_description = open("README.erp5.util.txt").read() + "\n"