diff --git a/.github/workflows/mattermost.yml b/.github/workflows/mattermost.yml
deleted file mode 100644
index 8afa3d29..00000000
--- a/.github/workflows/mattermost.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-on: [push, pull_request]
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-    - name: Create the Mattermost Message
-      run: |
-        echo "{\"text\":\"New Commit or PR on GitHub\", \"username\":\"GitHub\"}" > mattermost.json
-    - uses: mattermost/action-mattermost-notify@master
-      env:
-        MATTERMOST_WEBHOOK_URL: ${{ secrets.MATTERMOST_WEBHOOK_URL }}