diff --git a/days/97-99-online-game-api/demo_app/web/requirements.txt b/days/97-99-online-game-api/demo_app/web/requirements.txt
index 36ecb361..4564bc58 100644
--- a/days/97-99-online-game-api/demo_app/web/requirements.txt
+++ b/days/97-99-online-game-api/demo_app/web/requirements.txt
@@ -1,2 +1,3 @@
 flask
-sqlalchemy
\ No newline at end of file
+sqlalchemy
+werkzeug>=3.1.5 # not directly required, pinned by Snyk to avoid a vulnerability
\ No newline at end of file