diff --git a/requirements.txt b/requirements.txt
index e9fdf5c69..6467e0d6d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ yaql>=1.0.0 # Apache 2.0 License
 Paste # MIT
 
 jsonschema!=2.5.0,<3.0.0,>=2.0.0 # MIT
-python-keystoneclient!=1.8.0,>=1.6.0 # Apache-2.0
+python-keystoneclient!=1.8.0,!=2.1.0,>=1.6.0 # Apache-2.0
 python-heatclient>=0.6.0 # Apache-2.0
 python-neutronclient>=2.6.0 # Apache-2.0
 python-muranoclient>=0.7.1 # Apache-2.0