diff --git a/requirements.txt b/requirements.txt
index 6077f0c3..c890b55c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
-Babel>=2.3.4 # BSD
+Babel!=2.4.0,>=2.3.4 # BSD
 pbr>=2.0.0 # Apache-2.0
 PyYAML>=3.10.0 # MIT
 flake8<2.6.0,>=2.5.4 # MIT