diff --git a/.github/workflows/check-rustfmt.yaml b/.github/workflows/check-rustfmt.yaml
new file mode 100644
index 0000000..12a84e7
--- /dev/null
+++ b/.github/workflows/check-rustfmt.yaml
@@ -0,0 +1,11 @@
+name: check-rustfmt
+on: pull_request
+jobs:
+  format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.head_ref }}
+      - name: cargo-fmt
+        run: cargo fmt -- --check