diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index 2faed34..188d5fb 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -46,7 +46,7 @@ services:
   postgres:
     image: postgres:16-alpine
     ports:
-      - "127.0.0.1:5432:5432"
+      - "127.0.0.1:${DB_PORT:-5433}:5432"
     volumes:
       - pg-data:/var/lib/postgresql/data
       - ./db/init.sql:/docker-entrypoint-initdb.d/init.sql