diff --git a/setup.py b/setup.py
index c82b06d..eb8dbc9 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 from setuptools import setup, find_packages
 
-version = '5.0.0a4'
+version = '5.0.0a5.dev0'
 
 setup(
     name='plone.app.contentrules',