diff --git a/setup.py b/setup.py
index 53cb532..ce9c1f3 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 from setuptools import setup
 
-VERSION = "0.4a2"
+VERSION = "0.5a0"
 
 
 def get_long_description():