Updated from global requirements

OpenStack Proposal Bot · OpenStack Proposal Bot · commit 358175158da2 · 2017-04-07T14:32:41.000Z
Change-Id: I8e7362555d330613a87c095b89bb2783df03a6e3
diff --git a/requirements.txt b/requirements.txt
@@ -4,7 +4,7 @@
 pbr>=2.0.0 # Apache-2.0
 six>=1.9.0 # MIT
 
-Babel>=2.3.4 # BSD
+Babel!=2.4.0,>=2.3.4 # BSD
 cliff>=2.3.0 # Apache-2.0
 keystoneauth1>=2.18.0 # Apache-2.0
 openstacksdk>=0.9.14 # Apache-2.0
