diff --git a/requirements.txt b/requirements.txt
index fa8cc59080..fe0c489106 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -41,7 +41,7 @@ python-heatclient>=1.6.1 # Apache-2.0
 python-keystoneclient>=3.8.0 # Apache-2.0
 python-magnumclient>=2.0.0 # Apache-2.0
 python-manilaclient>=1.12.0 # Apache-2.0
-python-mistralclient>=2.0.0 # Apache-2.0
+python-mistralclient>=3.1.0 # Apache-2.0
 python-monascaclient>=1.1.0 # Apache-2.0
 python-neutronclient>=5.1.0 # Apache-2.0
 python-novaclient>=7.1.0 # Apache-2.0