diff --git a/requirements.openstackclient.txt b/requirements.openstackclient.txt
index b2f6aca19..e853edfb9 100644
--- a/requirements.openstackclient.txt
+++ b/requirements.openstackclient.txt
@@ -15,7 +15,7 @@ python-keystoneclient==5.8.0
 python-magnumclient==4.11.0
 python-manilaclient==6.2.0
 python-masakariclient==8.8.0
-python-mistralclient==6.2.0
+python-mistralclient==6.3.0
 python-neutronclient==13.0.0
 python-novaclient==18.13.0
 python-octaviaclient==3.14.0