diff --git a/requirements.txt b/requirements.txt
index e5be006..6613abd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ oslo.config>=2.3.0 # Apache-2.0
 httplib2>=0.7.5
 iso8601>=0.1.9
 requests!=2.8.0,>=2.5.2
-python-keystoneclient>=1.6.0
+python-keystoneclient!=1.8.0,>=1.6.0
 PyYAML>=3.1.0
 stevedore>=1.5.0 # Apache-2.0
 six>=1.9.0