diff --git a/test-requirements.txt b/test-requirements.txt
index 5db23369cb..20a2d5a9f0 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -20,7 +20,7 @@ osprofiler>=1.1.0 # Apache-2.0
 
 # Install these to generate sphinx autodocs
 python-barbicanclient>=3.3.0 # Apache-2.0
-python-congressclient>=1.0.0 # Apache-2.0
+python-congressclient<2000,>=1.0.0 # Apache-2.0
 python-designateclient>=1.5.0 # Apache-2.0
 python-heatclient>=0.6.0 # Apache-2.0
 python-ironicclient>=1.1.0 # Apache-2.0