diff --git a/.env.example b/.env.example
index a75435f..aedd241 100644
--- a/.env.example
+++ b/.env.example
@@ -7,6 +7,8 @@ REFRESH_TOKEN_EXPIRATION_TIME=1234
 REFRESH_TOKEN_SECRET=123
 TZ=Asia/Taipei
 SQS_URL=123
+BACKEND_URL=https://test.com
+FRONTEND_URL=https://test.com
 AWS_ACCESS_KEY_ID=123
 AWS_SECRET_ACCESS_KEY=1234
 GOOGLE_CLIENT_ID=123