diff --git a/requirements.txt b/requirements.txt
index efcd7bb..2fe4ca7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,6 +9,6 @@ oslo.i18n!=3.15.2,>=2.1.0 # Apache-2.0
 oslo.utils>=3.20.0 # Apache-2.0
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 PrettyTable<0.8,>=0.7.1 # BSD
-keystoneauth1>=2.20.0 # Apache-2.0
+keystoneauth1>=2.21.0 # Apache-2.0
 six>=1.9.0 # MIT
 PyYAML>=3.10.0 # MIT