diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7291ef9..df74f9b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,3 +26,11 @@ jobs:
         run: make all
       - name: test
         run: make check
+
+  fmt:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: RafikFarhad/clang-format-github-action@v1.0.1
+        with:
+          style: "Google"