Updated for 1.5.2b1
diff --git a/Mac/_checkversion.py b/Mac/_checkversion.py
index 6dffa2d..ee01857 100644
--- a/Mac/_checkversion.py
+++ b/Mac/_checkversion.py
@@ -5,7 +5,7 @@
 import pyversioncheck
 
 _PACKAGE="MacPython"
-_VERSION="1.5.1"
+_VERSION="1.5.2b1"
 _URL="http://www.cwi.nl/~jack/macpythonversion.txt"
 
 try: