diff --git a/requirements.txt b/requirements.txt
index 813ec4655..1b7631771 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -62,6 +62,7 @@ os-xenapi>=0.3.1 # Apache-2.0
 tooz>=1.58.0 # Apache-2.0
 cursive>=0.2.1 # Apache-2.0
 pypowervm>=1.1.15 # Apache-2.0
+retrying!=1.3.0 # Apache-2.0
 os-service-types>=1.2.0 # Apache-2.0
 taskflow>=2.16.0 # Apache-2.0
 python-dateutil>=2.5.3 # BSD