diff --git a/setup.py b/setup.py
index d20cac07..85411849 100644
--- a/setup.py
+++ b/setup.py
@@ -42,7 +42,7 @@ else:
 
 setup(
     name='zipline',
-    version='0.5.8',
+    version='0.5.9',
     description='A backtester for financial algorithms.',
     author='Quantopian Inc.',
     author_email='opensource@quantopian.com',