diff --git a/requirements.txt b/requirements.txt
index 7e3e991d..6cf10051 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ python-freezerclient>=1.3.0 # Apache-2.0
 oslo.utils>=3.20.0 # Apache-2.0
 oslo.log>=3.22.0 # Apache-2.0
 oslo.config>=4.0.0 # Apache-2.0
-keystoneauth1>=2.20.0 # Apache-2.0
+keystoneauth1>=2.21.0 # Apache-2.0
 os-brick>=1.13.1 # Apache-2.0
 
 pycrypto>=2.6 # Public Domain