diff --git a/requirements.txt b/requirements.txt
index 51ccad2..f0f56fc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,5 +3,5 @@
 # process, which may cause wedges in the gate later.
 
 pbr>=1.6
-python-keystoneclient>=1.6.0
+python-keystoneclient!=1.8.0,>=1.6.0
 requests-kerberos>=0.6;python_version=='2.7' or python_version=='2.6' # MIT