diff --git a/s3_management/manage.py b/s3_management/manage.py
index 9d9e72d8d..c6d7d535a 100644
--- a/s3_management/manage.py
+++ b/s3_management/manage.py
@@ -43,6 +43,7 @@
     "idna",
     "Jinja2",
     "lit",
+    "MarkupSafe",
     "mpmath",
     "nestedtensor",
     "networkx",