diff --git a/.github/workflows/prevent-master-pr.yml b/.github/workflows/prevent-master-pr.yml
new file mode 100644
index 000000000000..58f506860498
--- /dev/null
+++ b/.github/workflows/prevent-master-pr.yml
@@ -0,0 +1,13 @@
+name: Prevent Merging into Master
+
+on:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  fail:
+    runs-on: ubuntu-latest
+    steps:
+      - run: exit 1
+