diff --git a/requirements.txt b/requirements.txt
index b32d4a8..370e6fe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,7 @@
+# Requirements lower bounds listed here are our best effort to keep them up to
+# date but we do not test them so no guarantee of having them all correct. If
+# you find any incorrect lower bounds, let us know or propose a fix.
 pbr!= 2.1.0,>=2.0.0
-Babel>=1.3
 python-cloudkittyclient>=0.5.0
 horizon>=17.1.0 # Apache-2.0
 XStatic-D3>=3.5.17.0