diff --git a/web_demo/requirements.txt b/web_demo/requirements.txt
index 9aff620..f88d29e 100644
--- a/web_demo/requirements.txt
+++ b/web_demo/requirements.txt
@@ -1,4 +1,4 @@
-flask==1.1.1
+flask==2.2.5
 itsdangerous==1.1.0
 gunicorn==19.9.0
 jinja2==2.11.3