diff --git a/.github/workflows/ensure-formatting.yaml b/.github/workflows/ensure-formatting.yaml
new file mode 100644
index 00000000..8d306d1c
--- /dev/null
+++ b/.github/workflows/ensure-formatting.yaml
@@ -0,0 +1,19 @@
+name: ensure-formatting
+
+on:
+  pull_request:
+
+jobs:
+  ensure-formatting:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+        with:
+          submodules: recursive
+
+      - name: Test formatting for all files
+        working-directory: ${{ github.workspace }}
+        run: |
+          ./scripts/reformat-all.sh
+          [[ $(git status --porcelain | wc -l) == 0 ]]
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