diff --git a/requirements.txt b/requirements.txt
index e662587066..ac7323fca8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ pbr>=1.6 # Apache-2.0
 six>=1.9.0 # MIT
 
 Babel>=2.3.4 # BSD
-cliff!=1.16.0,!=1.17.0,>=1.15.0 # Apache-2.0
+cliff>=2.2.0 # Apache-2.0
 keystoneauth1>=2.10.0 # Apache-2.0
 openstacksdk>=0.9.7 # Apache-2.0
 osc-lib>=1.0.2 # Apache-2.0