diff --git a/backend/requirements.txt b/backend/requirements.txt
index 51dcb0c..4e79d91 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,2 +1,3 @@
 flask
 flask_cors
+werkzeug>=3.1.5 # not directly required, pinned by Snyk to avoid a vulnerability