diff --git a/docker-compose.yml b/docker-compose.yml
index 7bda512..52c18bb 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -28,6 +28,7 @@ services:
       replicas: 1
       restart_policy:
         condition: any
+    hostname: chat-mongo
     image: mongo:4.4.0@sha256:ebd31eaac273a9544a33387aa859b0a8676565340a40fc824fa7bda686f462f1
     networks:
       - appnet