diff --git a/requirements.txt b/requirements.txt
index e98257c9a..b08504104 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,5 +4,5 @@ iso8601>=0.1.9
 PrettyTable>=0.7,<0.8
 requests>=1.1
 simplejson>=2.0.9
-six>=1.6.0
+six>=1.7.0
 Babel>=1.3