diff --git a/docker-compose.yml b/docker-compose.yml
index 30d5f1c..0936661 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -11,8 +11,8 @@ services:
     volumes:
       - db-data:/var/lib/postgresql/data
       - ./init.sql:/docker-entrypoint-initdb.d/init.sql
-    ports:
-      - "9899:5432"
+    networks:
+      - nymeria-network
   app:
     container_name: nymeria-app
     build: .
@@ -20,7 +20,12 @@ services:
       - "9898:9898"
     depends_on:
       - db
+    networks:
+      - nymeria-network
 
 volumes:
   db-data:
     name: nymeria-db
+
+networks:
+  nymeria-network: