diff --git a/gramps/src/const.py b/gramps/src/const.py
index dbec31c22..ec68e8bc6 100644
--- a/gramps/src/const.py
+++ b/gramps/src/const.py
@@ -75,7 +75,7 @@ gtkrcFile      = rootDir + os.sep + "gtkrc"
 #
 #-------------------------------------------------------------------------
 progName     = "gramps"
-version      = "0.5.0"
+version      = "0.5.1pre"
 copyright    = "(C) 2001 Donald N. Allingham"
 authors      = ["Donald N. Allingham"]
 comments     = _("Gramps (Genealogical Research and Analysis Management Programming System) is a personal genealogy program that can be extended by using the Python programming language.")