diff --git a/requirements.txt b/requirements.txt
index 7babb2047d..cb2e7b2e68 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ PrettyTable<0.8,>=0.7.1 # BSD
 Paste # MIT
 
 jsonschema!=2.5.0,<3.0.0,>=2.0.0 # MIT
-python-keystoneclient!=2.1.0,>=2.0.0 # Apache-2.0
+python-keystoneclient>=3.6.0 # Apache-2.0
 pyOpenSSL>=0.14 # Apache-2.0
 # Required by openstack.common libraries
 six>=1.9.0 # MIT