diff --git a/requirements.txt b/requirements.txt
index 7832e03e..c6e6de65 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 pbr>=1.6
 Babel>=1.3
-cliff>=1.14.0 # Apache-2.0
+cliff>=1.15.0 # Apache-2.0
 PyYAML>=3.1.0
 python-dateutil>=2.4.2
 six>=1.9.0