diff --git a/.github/workflows/customJson.yml b/.github/workflows/customJson.yml
index 31cad47..34efee1 100644
--- a/.github/workflows/customJson.yml
+++ b/.github/workflows/customJson.yml
@@ -9,7 +9,7 @@ jobs:
       id: slack
       uses: slackapi/slack-github-action@v1.7.0
       with:
-        payload: '{key: "value", foo: "bar"}'
+        payload: "{\"key\":\"value\",\"foo\":\"bar\"}"
       env:
         SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
         SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}