diff --git a/.github/workflows/force-rebase.yml b/.github/workflows/force-rebase.yml
new file mode 100644
index 000000000..5c15de0ae
--- /dev/null
+++ b/.github/workflows/force-rebase.yml
@@ -0,0 +1,21 @@
+name: Force rebased
+
+on: [pull_request]
+
+jobs:
+  force-rebase:
+    runs-on: ubuntu-latest
+    steps:
+      - name: 'PR commits + 1'
+        run: echo "PR_FETCH_DEPTH=$(( ${{ github.event.pull_request.commits }} + 1 ))" >> "${GITHUB_ENV}"
+
+      - name: 'Checkout PR branch and all PR commits'
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          fetch-depth: ${{ env.PR_FETCH_DEPTH }}
+
+      - name: Is Rebased on master?
+        run: |
+          merges="\$(git log --oneline HEAD^${{ env.PR_FETCH_DEPTH }}...HEAD --merges )"; \
+          echo "--- Merges ---\\n\${merges}"; [ -z "\${merges}" ]
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