diff --git a/sample-apps/flask/requirements.txt b/sample-apps/flask/requirements.txt
index 0881df7b..e9dacc3f 100644
--- a/sample-apps/flask/requirements.txt
+++ b/sample-apps/flask/requirements.txt
@@ -1,7 +1,7 @@
 boto3==1.34.26
 certifi==2024.7.4
 chardet==5.2.0
-Flask==2.3.3
+Flask==3.1.3
 idna==3.7
 requests==2.32.0
 urllib3==1.26.19