diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
new file mode 100644
index 0000000..27296db
--- /dev/null
+++ b/.github/workflows/format.yml
@@ -0,0 +1,23 @@
+on: [pull_request]
+
+jobs:
+  format-check:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Format files
+      run: |
+        clang-format -i $(find src -name '*.c' -or -name '*.h')
+
+    - name: Check for changes
+      run: |
+        changed_files=$(git diff --name-only)
+        if [ -n "$changed_files" ]; then
+          echo "The following files require formatting:"
+          echo "$changed_files"
+          echo "Run 'make format' and commit the changes."
+          exit 1
+        fi