diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index e588245..2809fe4 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -14,14 +14,7 @@ jobs:
           tar -xf clang+llvm-17.0.6-x86_64-linux-gnu-ubuntu-22.04.tar.xz
           sudo cp clang+llvm-17.0.6-x86_64-linux-gnu-ubuntu-22.04/bin/clang-format /usr/local/bin/
       - name: Check clang-format
-        run: |
-          set -e
-          FILES=$(git ls-files | grep -E '\.(cc|hh|hpp|cpp|cxx)$' || true)
-          if [ -z "$FILES" ]; then exit 0; fi
-          clang-format --version
-          for f in $FILES; do
-            clang-format --style=google --dry-run -Werror "$f"
-          done
+        run: clang-format --style=google --dry-run -Werror **/*.{hpp,hh,hxx,h,cpp,cc,cxx,c}
 
   build-and-test:
     runs-on: ubuntu-latest
@@ -31,7 +24,14 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install compiler
-        run: sudo apt-get update && sudo apt-get install -y g++ cmake
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y software-properties-common
+          sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+          sudo apt-get update
+          sudo apt-get install -y gcc-13 g++-13 cmake
+          sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-13 100
+          sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-13 100
       - name: Configure CMake
         run: cmake -B build -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
       - name: Build