diff --git a/python-flask-restful-openpgp-proxy/requirements.txt b/python-flask-restful-openpgp-proxy/requirements.txt
index ed0996d..02cfc73 100644
--- a/python-flask-restful-openpgp-proxy/requirements.txt
+++ b/python-flask-restful-openpgp-proxy/requirements.txt
@@ -1,4 +1,4 @@
 requests==2.32.4
-Flask==2.3.2
+Flask==3.1.3
 flask_restful==0.3.6
 gnupg==2.3.1