diff --git a/.github/workflows/rustfmt.yml b/.github/workflows/rustfmt.yml
new file mode 100644
index 000000000..c6d8f0058
--- /dev/null
+++ b/.github/workflows/rustfmt.yml
@@ -0,0 +1,17 @@
+on: push
+
+# see: https://github.com/marketplace/actions/rust-rustfmt-check
+
+name: rustfmt
+
+jobs:
+  format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt
+      - uses: mbrobbel/rustfmt-check@master
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}