diff --git a/requirements.txt b/requirements.txt
index ed3cf02..7d084e8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ setuptools!=24.0.0,>=16.0 # PSF/ZPL
 pbr>=1.8 # Apache-2.0
 keystoneauth1>=2.14.0 # Apache-2.0
 
-cliff>=2.2.0 # Apache-2.0
+cliff>=2.3.0 # Apache-2.0
 oslo.utils>=3.18.0 # Apache-2.0
 oslo.i18n>=2.1.0 # Apache-2.0
 oslo.log>=3.11.0 # Apache-2.0