diff --git a/requirements.txt b/requirements.txt
index e34306e78..c15567425 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,6 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 Babel>=1.3
-cliff>=1.13.0 # Apache-2.0
 eventlet>=0.17.4
 Flask<1.0,>=0.10
 keystonemiddleware>=1.5.0