diff --git a/version.py b/version.py
index 96535407..eadf2ecb 100644
--- a/version.py
+++ b/version.py
@@ -24,4 +24,4 @@ __date__ = "$Date$"
 __copyright__ = "Copyright (c) 2004 Cyril Jaquier"
 __license__ = "GPL"
 
-version = "0.5.1"
+version = "0.5.1-CVS"