diff --git a/blueprints/ackee/docker-compose.yml b/blueprints/ackee/docker-compose.yml
index 5f26fbfa..43e4220f 100644
--- a/blueprints/ackee/docker-compose.yml
+++ b/blueprints/ackee/docker-compose.yml
@@ -14,6 +14,7 @@ services:
     image: mongo:4
     environment:
       - MONGO_INITDB_ROOT_PASSWORD=${MONGO_INITDB_ROOT_PASSWORD}
+      - MONGO_INITDB_ROOT_USERNAME=mongo
     volumes:
       - mongo-data:/data/db