diff --git a/docker-images/lagopus-server/requirements.txt b/docker-images/lagopus-server/requirements.txt
index e6ea2a4..ec0a88e 100644
--- a/docker-images/lagopus-server/requirements.txt
+++ b/docker-images/lagopus-server/requirements.txt
@@ -1,4 +1,4 @@
-werkzeug==0.16
+werkzeug==2.2.3
 flask
 flask-restx
 kubernetes