diff --git a/scheduler/requirements.txt b/scheduler/requirements.txt
index 6fc789799aa..985d97d91cc 100644
--- a/scheduler/requirements.txt
+++ b/scheduler/requirements.txt
@@ -1,3 +1,3 @@
-Flask==1.0.2
+Flask==2.2.5
 gunicorn==19.9.0
 google-cloud-scheduler==0.1.0