diff --git a/hosts/chelsty-infra/runtime/zigbee2mqtt/docker-compose.override.yml b/hosts/chelsty-infra/runtime/zigbee2mqtt/docker-compose.override.yml
index 4210d5d..09335ad 100644
--- a/hosts/chelsty-infra/runtime/zigbee2mqtt/docker-compose.override.yml
+++ b/hosts/chelsty-infra/runtime/zigbee2mqtt/docker-compose.override.yml
@@ -3,6 +3,9 @@ services:
     # host network: mosquitto runs with network_mode: host on chelsty-infra,
     # so zigbee2mqtt must also use host networking to reach localhost:1883.
     network_mode: host
+    # Clear the ports list from the base compose — host networking makes port
+    # mappings meaningless and docker-compose v1 errors if both are present.
+    ports: []
     volumes:
       # configuration.yaml lives in the runtime config dir (not in Git).
       # On chelsty-infra: /opt/homelab/config/zigbee2mqtt/configuration.yaml