diff --git a/setup.py b/setup.py
index 746afb9..ae2b69d 100644
--- a/setup.py
+++ b/setup.py
@@ -48,6 +48,7 @@ package_info = dict(
 setuptools_info = dict(
     install_requires=['requests>=0.12.1',
                       'simplejson',
+                      'six',
     ],
 )