diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 5c813cd..e0ad601 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -177,16 +177,16 @@ jobs:
         if: failure()
         run: unified-doc/scripts/build-drift-alert-context.sh "$GITHUB_REPOSITORY" "$GITHUB_RUN_ID" "$GITHUB_OUTPUT"
 
-      # Send drift alert disabled pending fix to openziti/ziti-mattermost-action-py
-      # (addPushDetails crashes with KeyError: 'forced' on non-push event JSON)
-      # - name: Send drift alert
-      #   if: failure() && steps.drift-ctx.outputs.has_drift == 'true'
-      #   uses: openziti/ziti-mattermost-action-py@v1
-      #   with:
-      #     zitiId: ${{ secrets.ZITI_MATTERMOST_IDENTITY }}
-      #     webhookUrl: ${{ secrets.ZHOOK_URL_DOC_NOTIFICATIONS }}
-      #     eventJson: ${{ steps.drift-ctx.outputs.event-json }}
-      #     senderUsername: "GitHubZ"
+      # The schedule guard is load-bearing: the action's push path
+      # expects payload keys the drift JSON lacks, and crashes without it.
+      - name: Send drift alert
+        if: failure() && steps.drift-ctx.outputs.has_drift == 'true' && github.event_name == 'schedule'
+        uses: openziti/ziti-mattermost-action-py@v1
+        with:
+          zitiId: ${{ secrets.ZITI_MATTERMOST_IDENTITY }}
+          webhookUrl: ${{ secrets.ZHOOK_URL_DOC_NOTIFICATIONS }}
+          eventJson: ${{ steps.drift-ctx.outputs.event-json }}
+          senderUsername: "GitHubZ"
 
   # Notify the doc-alerts Mattermost channel only when the nightly scheduled
   # run fails. Push/workflow_dispatch runs are watched live by whoever triggered