diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 013bfcb..d61e82e 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -36,11 +36,18 @@ jobs:
           ${{ runner.os }}-pip-
 
     # Cache cookie.json
-    - name: Cache cookie.json
+    - name: Cache cookie.json with timestamp check
       uses: actions/cache@v3
       with:
         path: /home/runner/work/today.isangjeong/today.isangjeong/app/temp/auth/cookies.json
-        key: ${{ runner.os }}-cookie-${{ hashFiles('/home/runner/work/today.isangjeong/today.isangjeong/app/temp/auth/cookies.json') }}
+        key: ${{ runner.os }}-cookie-${{ steps.timestamp.outputs.timestamp }}
+        restore-keys: |
+          ${{ runner.os }}-cookie-
+
+    - name: Set timestamp for cookie.json
+      id: timestamp
+      run: |
+        echo "::set-output name=timestamp::$(date -r /home/runner/work/today.isangjeong/today.isangjeong/app/temp/auth/cookies.json +'%s')"
 
     - name: Install dependencies (only if requirements.txt changed)
       run: |