diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index 1b09772..a083054 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -23,6 +23,8 @@ services:
       - "traefik.http.routers.kochwas.rule=Host(`kochwas.siegeln.net`)"
       - "traefik.http.routers.kochwas.entrypoints=websecure"
       - "traefik.http.routers.kochwas.tls.certresolver=cloudflareResolver"
+      - "traefik.http.routers.kochwas.tls.domains[0].main=siegeln.net"
+      - "traefik.http.routers.kochwas.tls.domains[0].sans=*.siegeln.net"
       # Specify which port Traefik should forward traffic to inside the container
       - "traefik.http.services.kochwas.loadbalancer.server.port=3000"
       # Explicitly tell Traefik which network to use (since kochwas is on two networks)