diff --git a/api-customer/docker-compose.yml b/api-customer/docker-compose.yml
index 5d439996..267a3753 100644
--- a/api-customer/docker-compose.yml
+++ b/api-customer/docker-compose.yml
@@ -10,7 +10,7 @@ services:
       - mongo
       - mosquitto
     environment:
-      - MONGO_URI=mongodb://user:psk358xpg@customer-database:27017
+      - MONGO_URI=mongodb://user:psk358xpg@customer-database:27017/customer-db?authSource=customer-db
       - DATABASE_NAME=customer-db
       - LOCAL_BROKER_USERNAME=main
       - LOCAL_BROKER_PASSWORD=hepl