diff --git a/.github/workflows/takt-action.yml b/.github/workflows/takt-action.yml
index 5e3a759..622932e 100644
--- a/.github/workflows/takt-action.yml
+++ b/.github/workflows/takt-action.yml
@@ -31,6 +31,7 @@ jobs:
         if: always()
         uses: slackapi/slack-github-action@v2.0.0
         with:
+          webhook-type: incoming-webhook
           webhook: ${{ secrets.SLACK_WEBHOOK_URL }}
           payload: |
             {