diff --git a/requirements.txt b/requirements.txt
index caa83b3675..11d7d6c27a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,4 +22,4 @@ python-saharaclient>=0.6.0
 python-swiftclient>=1.6
 python-troveclient>=1.0.3
 pytz>=2010h
-six>=1.5.2
+six>=1.6.0