diff --git a/requirements.txt b/requirements.txt
index 401cc91c..a5eb050d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 pbr>=1.6 # Apache-2.0
 
-Babel>=1.3 # BSD
+Babel!=2.3.0,!=2.3.1,!=2.3.2,!=2.3.3,>=1.3 # BSD
 six>=1.9.0 # MIT
 keystoneauth1>=2.1.0 # Apache-2.0
 stevedore>=1.5.0 # Apache-2.0