diff --git a/requirements.txt b/requirements.txt
index 344daef1..a2710b69 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ oslo.serialization>=1.4.0 # Apache-2.0
 oslo.utils!=2.6.0,>=2.0.0 # Apache-2.0
 pbr>=1.6
 pycadf>=1.1.0
-python-keystoneclient!=1.8.0,>=1.6.0
+python-keystoneclient!=1.8.0,<3.0.0,>=1.6.0
 requests!=2.8.0,!=2.9.0,>=2.5.2
 six>=1.9.0
 WebOb>=1.2.3