diff --git a/requirements.txt b/requirements.txt
index 95b4e643..686f4982 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ pbr>=1.6 # Apache-2.0
 Babel>=1.3 # BSD
 argparse # PSF
 PrettyTable<0.8,>=0.7 # BSD
-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
 requests!=2.9.0,>=2.8.1 # Apache-2.0
 warlock<2,>=1.0.1 # Apache-2.0
 six>=1.9.0 # MIT