diff --git a/setup.py b/setup.py
index baa06352..5bb7ca93 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,7 @@
 from setuptools import setup, find_packages
 
 setup(name='zipline',
-      version='0.5.0',
+      version='0.5.1',
       description='A backtester for financial algorithms.',
       author='Quantopian Inc.',
       author_email='opensource@quantopian.com',