diff --git a/examples/app/requirements.txt b/examples/app/requirements.txt
index 097acc1..2476cce 100644
--- a/examples/app/requirements.txt
+++ b/examples/app/requirements.txt
@@ -1,4 +1,4 @@
 nbdt==0.0.3
-flask==1.1.1
+flask==2.3.2
 uwsgi==2.0.18
 flask-cors==3.0.9