diff --git a/requirements.txt b/requirements.txt
index 66d02541..c616a3f7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ python-keystoneclient!=1.8.0,!=2.1.0,>=1.6.0 # Apache-2.0
 python-heatclient>=0.6.0 # Apache-2.0
 python-neutronclient!=4.1.0,>=2.6.0 # Apache-2.0
 python-muranoclient>=0.8.2 # Apache-2.0
-python-congressclient>=1.0.0 # Apache-2.0
+python-congressclient<2000,>=1.0.0 # Apache-2.0
 python-mistralclient>=1.0.0 # Apache-2.0
 oslo.db>=4.1.0 # Apache-2.0
 oslo.config>=3.7.0 # Apache-2.0