diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
new file mode 100644
index 0000000..ccae8b7
--- /dev/null
+++ b/.github/workflows/format.yml
@@ -0,0 +1,16 @@
+name: format
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: install
+        run: make install
+      - name: format
+        run: make format