diff --git a/docker-compose.yml b/docker-compose.yml
index 605b2a6..bfb7d5f 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -12,7 +12,7 @@ services:
       - APP_ENV=production
       - APP_DEBUG=false
       - DB_CONNECTION=pgsql
-      - DB_HOST=finance-postgres # 🎯 關鍵：改用資料庫的服務名稱當作 Host！
+      - DB_HOST=finance-laravel-backend-postgres # 🎯 關鍵：改用資料庫的服務名稱當作 Host！
       - DB_PORT=5432
       - DB_DATABASE=myfinance
       - DB_USERNAME=myfinance_henry4682