diff --git a/railpack.json b/railpack.json
index 12322bb..c500993 100644
--- a/railpack.json
+++ b/railpack.json
@@ -1,7 +1,7 @@
 {
   "deploy": {
     "variables": {
-      "NODE_ENV": "production"
+      "TZ": "Asia/Seoul"
     }
   }
 }