diff --git a/requirements.txt b/requirements.txt
index 221c5ef5..59432640 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,6 +11,7 @@ python-heatclient>=0.3.0
 python-glanceclient>=0.18.0
 python-saharaclient>=0.10.0
 
+Babel>=1.3,!=2.3.0,!=2.3.1,!=2.3.2,!=2.3.3  # BSD
 paramiko>=1.13.0
 pbr>=1.6
 requests>=2.5.2,!=2.8.0