Update version to 2.5.0-pre
diff --git a/python/setup.py b/python/setup.py
index fbe2766..059a98b 100755
--- a/python/setup.py
+++ b/python/setup.py
@@ -154,7 +154,7 @@
         libraries = [ "protobuf" ]))
 
   setup(name = 'protobuf',
-        version = '2.4.2-pre',
+        version = '2.5.0-pre',
         packages = [ 'google' ],
         namespace_packages = [ 'google' ],
         test_suite = 'setup.MakeTestSuite',