diff --git a/mutalyzer/__init__.py b/mutalyzer/__init__.py
index 8e79052c652a299ea56d941b41450fd8b81555d9..d01a7cf81bf753963731526ee77174b235484e77 100644
--- a/mutalyzer/__init__.py
+++ b/mutalyzer/__init__.py
@@ -20,9 +20,9 @@ import os
 #
 # [1] http://peak.telecommunity.com/DevCenter/setuptools#specifying-your-project-s-version
 
-RELEASE = True
+RELEASE = False
 
-__version_info__ = ('2', '0', 'beta-22')
+__version_info__ = ('2', '0', 'beta-23', 'dev')
 __date__ = '2 Nov 2012'