diff --git a/examples/server/wsgi/requirements.txt b/examples/server/wsgi/requirements.txt
index ec9b3d4..2c71d17 100644
--- a/examples/server/wsgi/requirements.txt
+++ b/examples/server/wsgi/requirements.txt
@@ -3,7 +3,7 @@ click==6.7
 enum-compat==0.0.2
 enum34==1.1.6
 eventlet==0.40.3
-Flask==1.0.2
+Flask==3.1.3
 greenlet==0.4.12
 itsdangerous==0.24
 Jinja2==3.1.6