diff --git a/Backend/requirements.txt b/Backend/requirements.txt
index 7a7bbb8..3fc8a7b 100644
--- a/Backend/requirements.txt
+++ b/Backend/requirements.txt
@@ -3,3 +3,4 @@ flask_sqlalchemy
 flask_script
 flask_migrate
 
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability