diff --git a/requirements.txt b/requirements.txt
index 010f7e8..808a9e0 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
 wrapt>=1.7.0 # BSD License
 funcsigs>=0.4;python_version=='2.7' or python_version=='2.6' # Apache-2.0