diff --git a/example/requirements.txt b/example/requirements.txt
index cb9ade9..a292495 100644
--- a/example/requirements.txt
+++ b/example/requirements.txt
@@ -1,4 +1,4 @@
-flask==1.0
+flask==2.3.2
 connexion[swagger-ui]
 quart
 sanic
\ No newline at end of file