diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index d11d2ccc..f931babb 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -10,5 +10,5 @@ jobs:
     - uses: DoozyX/clang-format-lint-action@v0.13
       with:
         source: '.'
-        extensions: 'h,cpp,c'
+        extensions: 'hpp,h,cpp,c'
         clangFormatVersion: 12