diff --git a/common/docker-compose.yaml b/common/docker-compose.yaml
index 5a98827..e89ecab 100644
--- a/common/docker-compose.yaml
+++ b/common/docker-compose.yaml
@@ -91,6 +91,10 @@ services:
       - "traefik.http.middlewares.portainer.redirectscheme.scheme=https"
       - "traefik.http.routers.portainer-secure.entrypoints=websecure"
       - "traefik.http.routers.portainer-secure.rule=Host(`portainer.steinle-computer.de`)"
+      - "traefik.http.routers.portainer-secure.middlewares=portainer-secure"
+      - "traefik.http.middlewares.portainer-secure.headers.addvaryheader=true"
+      - "traefik.http.middlewares.portainer-secure.headers.accesscontrolalloworiginlist=https://homer.fam-steinle.de"
+      - "traefik.http.middlewares.portainer-secure.headers.accesscontrolallowheaders=x-api-key"
       - "traefik.http.routers.portainer-secure.tls.certresolver=cs"
       - "traefik.http.services.portainer-secure.loadbalancer.server.port=9000"