diff --git a/.github/workflows/azure-app-service-settings.yml b/.github/workflows/azure-app-service-settings.yml
index 6c842a4..f0bfd85 100644
--- a/.github/workflows/azure-app-service-settings.yml
+++ b/.github/workflows/azure-app-service-settings.yml
@@ -13,6 +13,10 @@ jobs:
     runs-on: ubuntu-latest
     environment: Production
     steps:
+      - name: Set current datetime as env variable
+        env:
+          TZ: 'Asia/Tokyo' # タイムゾーン指定
+        run: echo "CURRENT_DATETIME=$(date +'%Y-%m-%d %H:%M:%S')" >> $GITHUB_ENV
       - name: Az CLI Login
         uses: azure/login@v2
         with:
@@ -24,7 +28,7 @@ jobs:
         with:
           app-name: ${{ secrets.AZURE_WEBAPP_NAME }}
           slot-name: 'Production'
-          app-settings-json: '${{ vars.AZURE_WEBAPP_APP_SETTINGS }}'
+          app-settings-json: "${{ format(vars.AZURE_WEBAPP_APP_SETTINGS, env.CURRENT_DATETIME) }}"
           general-settings-json: '${{ vars.AZURE_WEBAPP_GENERAL_SETTINGS }}'
       - name: Az CLI Logout
         run: az logout