diff --git a/requirements.txt b/requirements.txt
index 5e23e58a..5f61be50 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.
 
-Babel>=1.3 # BSD
+Babel!=2.3.0,!=2.3.1,!=2.3.2,!=2.3.3,>=1.3 # BSD
 WebOb>=1.2.3 # MIT
 eventlet!=0.18.3,>=0.18.2 # MIT
 greenlet>=0.3.2 # MIT