diff --git a/requirements.txt b/requirements.txt
index 8fb2960e8..4376c9021 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,6 @@
 d2to1>=0.2.10,<0.3
 pbr>=0.5.16,<0.6
 
-cliff
 eventlet>=0.9.12
 falcon>=0.1.4
 iso8601>=0.1.4