diff --git a/requirements.txt b/requirements.txt
index 3392053b5..c698f84b5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,8 @@ passlib>=1.7.0 # BSD
 psutil>=3.2.2 # BSD
 python-ironic-inspector-client>=1.5.0 # Apache-2.0
 python-heatclient>=1.10.0 # Apache-2.0
-python-ironicclient>=2.3.0 # Apache-2.0
+python-ironicclient!=2.5.2,!=2.7.1,!=3.0.0,>=2.3.0,<4.0.0;python_version=='2.7' # Apache-2.0
+python-ironicclient!=2.5.2,!=2.7.1,!=3.0.0,>=2.3.0;python_version>='3.6' # Apache-2.0
 python-mistralclient!=3.2.0,>=3.1.0 # Apache-2.0
 python-openstackclient>=3.12.0 # Apache-2.0
 simplejson>=3.5.1 # MIT