diff --git a/requirements.txt b/requirements.txt
index cfde43e..1bc4554 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
 eventlet!=0.18.3,>=0.18.2 # MIT
 oslo.concurrency>=3.5.0 # Apache-2.0
 oslo.log>=1.14.0 # Apache-2.0