diff --git a/.github/workflows/nightly-v5-integtest.yml b/.github/workflows/nightly-v5-integtest.yml
index 948d769e..f90d8446 100644
--- a/.github/workflows/nightly-v5-integtest.yml
+++ b/.github/workflows/nightly-v5-integtest.yml
@@ -43,7 +43,7 @@ jobs:
       uses: actions/checkout@v4
       with:
         repository: DUNE-DAQ/listrev
-        ref: develop
+        ref: amogan/intentional_integtest_failure
         path: listrev
     
     - name: setup release and run tests
@@ -104,15 +104,24 @@ jobs:
     name: send slack message
     needs: integration_tests
     steps:
-    - name: Send JSON data to Slack workflow
+    - name: Send custom JSON data to Slack workflow
       id: slack
-      uses: slackapi/slack-github-action@v1.26.0
+      uses: slackapi/slack-github-action@v1.27.0
       with:
-        # Variables used by the Slack workflow
+        # For posting a rich message using Block Kit
         payload: |
           {
-            "workflow_name": "${{ github.workflow }}",
-            "workflow_url":  "${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
+            "text": "!!!GitHub Action Failure!!!",
+            "blocks": [
+              {
+                "type": "section",
+                "text": {
+                  "type": "mrkdwn",
+                  "text": "The GitHub Action ${{ github.workflow }} has failed! For more information, see ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
+                }
+              }
+            ]
           }
       env:
-        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
\ No newline at end of file
+        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_INCOMING_WEBHOOK_URL }}
+        SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
\ No newline at end of file