diff --git a/requirements.txt b/requirements.txt
index 3be2bbfe..3abefdb1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 six>=1.9.0
-Babel>=1.3
+Babel!=2.3.0,!=2.3.1,!=2.3.2,!=2.3.3,>=1.3 # BSD
 oslo.concurrency>=2.3.0 # Apache-2.0
 oslo.config>=2.3.0 # Apache-2.0
 oslo.context>=0.2.0 # Apache-2.0