diff --git a/docker-compose.yml b/docker-compose.yml
index ac883c4..56ca4b7 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -13,6 +13,7 @@ services:
       - NEXTAUTH_URL=${NEXTAUTH_URL:-http://localhost:3000}
       - NEXTAUTH_SECRET=${NEXTAUTH_SECRET}
       - MQTT_BROKER_URL=${MQTT_BROKER_URL:-mqtt://mosquitto:1883}
+      - MQTT_PUBLIC_BROKER_URL=${MQTT_PUBLIC_BROKER_URL}
       - MQTT_USERNAME=${MQTT_ADMIN_USERNAME:-admin}
       - MQTT_PASSWORD=${MQTT_ADMIN_PASSWORD:-admin}
       - MOSQUITTO_PASSWORD_FILE=/mosquitto/config/password.txt