diff --git a/demos/data-driven-web-apps-with-flask/app/ch15_deploy/final/requirements.txt b/demos/data-driven-web-apps-with-flask/app/ch15_deploy/final/requirements.txt
index 19fc8c4..3882858 100644
--- a/demos/data-driven-web-apps-with-flask/app/ch15_deploy/final/requirements.txt
+++ b/demos/data-driven-web-apps-with-flask/app/ch15_deploy/final/requirements.txt
@@ -6,7 +6,7 @@ blinker==1.9.0
     # via flask
 click==8.1.8
     # via flask
-flask==3.1.0
+flask==3.1.3
     # via -r requirements.piptools
 itsdangerous==2.2.0
     # via flask