diff --git a/demo-flask/requirements.txt b/demo-flask/requirements.txt
index d934093..5491649 100644
--- a/demo-flask/requirements.txt
+++ b/demo-flask/requirements.txt
@@ -1 +1,2 @@
 flask==1.0
+werkzeug>=3.1.4 # not directly required, pinned by Snyk to avoid a vulnerability