diff --git a/docs/examples/fork-process-model/flask-gunicorn/requirements.txt b/docs/examples/fork-process-model/flask-gunicorn/requirements.txt
index 86b654a95dc..e52edb72f6a 100644
--- a/docs/examples/fork-process-model/flask-gunicorn/requirements.txt
+++ b/docs/examples/fork-process-model/flask-gunicorn/requirements.txt
@@ -1,5 +1,5 @@
 click==7.1.2
-Flask==1.1.2
+Flask==2.3.2
 googleapis-common-protos==1.52.0
 grpcio==1.35.0
 gunicorn==20.0.4