diff --git a/requirements.txt b/requirements.txt
index 0544aaf3d1..8fcd6b4c4d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,14 +18,14 @@ netaddr
 suds>=0.4
 paramiko>=1.8.0
 pyasn1
-Babel>=0.9.6
+Babel>=1.3
 iso8601>=0.1.4
 jsonschema>=1.3.0,!=1.4.0
 python-cinderclient>=1.0.5
 python-neutronclient>=2.3.0,<3
 python-glanceclient>=0.9.0
 python-keystoneclient>=0.3.2
-six
+six>=1.4.1
 stevedore>=0.10
 websockify>=0.5.1,<0.6
 oslo.config>=1.2.0