diff --git a/.github/workflows/testing-slack.yml b/.github/workflows/testing-slack.yml
index a90aa9e5..f336492a 100644
--- a/.github/workflows/testing-slack.yml
+++ b/.github/workflows/testing-slack.yml
@@ -27,6 +27,7 @@ jobs:
           # For posting a rich message using Block Kit
           payload: |
             {
+              "username": "Testing Action",
               "text": "GitHub Action build result: ${{ job.status }}\n${{ github.event.pull_request.html_url || github.event.head_commit.url }}",
               "blocks": [
                 {