diff --git a/requirements.txt b/requirements.txt
index e94ecde37e..54ae0a03b3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ six>=1.9.0 # MIT
 
 Babel!=2.4.0,>=2.3.4 # BSD
 cliff>=2.8.0 # Apache-2.0
-keystoneauth1>=2.21.0 # Apache-2.0
+keystoneauth1!=3.0.0,>=2.21.0 # Apache-2.0
 openstacksdk>=0.9.17 # Apache-2.0
 osc-lib>=1.7.0 # Apache-2.0
 oslo.i18n!=3.15.2,>=2.1.0 # Apache-2.0