diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2e9157f..6b1f6a1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,6 +11,8 @@ jobs:
   cron:
     runs-on: ubuntu-latest
     timeout-minutes: 10
+    env:
+      TZ: Asia/Seoul
 
     steps:
       - uses: actions/checkout@v4