diff --git a/requirements.txt b/requirements.txt
index 9cab0c8..7d3fb35 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,6 +8,6 @@ oslo.i18n>=2.1.0 # Apache-2.0
 oslo.log>=1.14.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0
 oslo.utils>=3.5.0 # Apache-2.0
-python-keystoneclient!=1.8.0,!=2.1.0,>=1.6.0 # Apache-2.0
+python-keystoneclient!=1.8.0,!=2.1.0,<3.0.0,>=1.6.0 # Apache-2.0
 requests!=2.9.0,>=2.8.1 # Apache-2.0
 six>=1.9.0 # MIT