diff --git a/tools-requirements.txt b/tools-requirements.txt
index 3db94fe79..7bab4f852 100644
--- a/tools-requirements.txt
+++ b/tools-requirements.txt
@@ -5,3 +5,4 @@ pyrsistent==0.16.0;python_version<'3'
 pyrsistent>=0.17.0;python_version>='3'
 paramiko==2.8.0
 python-manilaclient<=3.0.0
+python-novaclient<=17.6.0