diff --git a/requirements.txt b/requirements.txt
index 982e783e5..f1624184b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,7 @@ PyYAML
 deepmerge
 fabric
 jinja2==2.11.*
+MarkupSafe==2.0.1
 invoke
 ruamel.yaml
 ansible==2.9.9