diff --git a/setup.py b/setup.py
index c1a68a04..ed61ecd2 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,7 @@ from setuptools import setup, find_packages
 
 setup(
     name='zipline',
-    version='0.5.2',
+    version='0.5.3',
     description='A backtester for financial algorithms.',
     author='Quantopian Inc.',
     author_email='opensource@quantopian.com',