diff --git a/.github/workflows/azure-app-service-settings.yml b/.github/workflows/azure-app-service-settings.yml
index cfc6418..805adf0 100644
--- a/.github/workflows/azure-app-service-settings.yml
+++ b/.github/workflows/azure-app-service-settings.yml
@@ -13,15 +13,10 @@ jobs:
     runs-on: ubuntu-latest
     environment: Production
     steps:
-      - name: Dump context
-        run: echo "${{ toJSON(github) }}"
       - name: Set current datetime as env variable
         env:
           TZ: 'Asia/Tokyo'
-        run: |
-          CURRENT_DATETIME=$(date +'%Y-%m-%d_%H:%M:%S')
-          SETTINGS=$(echo "${{ vars.AZURE_WEBAPP_APP_SETTINGS }}" | sed "s/{0}/$CURRENT_DATETIME/")
-          echo "SETTINGS='$SETTINGS'" >> $GITHUB_ENV
+        run: echo "CURRENT_DATETIME=$(date +'%Y-%m-%d_%H:%M:%S')" >> $GITHUB_ENV
       - name: Az CLI Login
         uses: azure/login@v2
         with:
@@ -33,7 +28,7 @@ jobs:
         with:
           app-name: ${{ vars.AZURE_WEBAPP_NAME }}
           slot-name: 'Production'
-          app-settings-json: "${{ env.SETTINGS }}"
+          app-settings-json: '{"name":"now","value":"${{ env.CURRENT_DATETIME }}","slotSetting":false}'
           general-settings-json: '${{ vars.AZURE_WEBAPP_GENERAL_SETTINGS }}'
       - name: Az CLI Logout
         run: az logout