diff --git a/scheduler/snippets/requirements.txt b/scheduler/snippets/requirements.txt
index 7e40ee42d12d..fc6ce7d5174c 100644
--- a/scheduler/snippets/requirements.txt
+++ b/scheduler/snippets/requirements.txt
@@ -1,3 +1,3 @@
-Flask==1.1.3
+Flask==2.0.0
 gunicorn==20.1.0
 google-cloud-scheduler==2.2.0