diff --git a/.github/workflows/linux-gcc13.yaml b/.github/workflows/linux-gcc13.yaml
index 35758a99..0db812af 100644
--- a/.github/workflows/linux-gcc13.yaml
+++ b/.github/workflows/linux-gcc13.yaml
@@ -1,4 +1,4 @@
-name: "Linux gcc13 Build"
+name: "Linux Latest Build"
 on:
   push:
     branches: [ v1.x ]
@@ -7,17 +7,22 @@ on:
 
 jobs:
   build_libebml:
-    name: libebml for Linux gcc13
+    name: libebml for Linux ${{ matrix.cxx }}
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        cxx: ['g++-14', 'clang++-18']
+    env:
+      CXX: ${{matrix.cxx}}
     steps:
+      - name: list compilers
+        run: dpkg --list | grep compiler
+
       - name: Get pushed code
         uses: actions/checkout@v4
 
       - name: Configure CMake
         run: cmake -S . -B _build -DCMAKE_INSTALL_PREFIX:STRING=${GITHUB_WORKSPACE}/_built -G Ninja
-        env:
-          CC:  gcc-13
-          CXX: g++-13
 
       - name: Build with CMake
         run: cmake --build _build --parallel
diff --git a/.github/workflows/linux.yaml b/.github/workflows/linux.yaml
index a1dc5cbb..abb33751 100644
--- a/.github/workflows/linux.yaml
+++ b/.github/workflows/linux.yaml
@@ -22,3 +22,29 @@ jobs:
 
       - name: Test installation
         run: cmake --install _build --prefix ${GITHUB_WORKSPACE}/_built
+
+  s390X:
+    name: libebml for Big Endian Linux
+    runs-on: ubuntu-latest
+    env:
+      CMAKE_OPTIONS: -DDEV_MODE=ON -DBUILD_TESTING=ON -DCMAKE_SYSTEM_PROCESSOR=s390x -DCMAKE_CROSSCOMPILING_EMULATOR="qemu-s390x;-L;/usr/s390x-linux-gnu/" -DCMAKE_CXX_COMPILER=s390x-linux-gnu-g++ -G Ninja
+    steps:
+      - name: install toolchain
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends qemu-user crossbuild-essential-s390x qemu-system-s390x
+
+      - name: list compilers
+        run: dpkg --list | grep compiler
+
+      - name: Get pushed code
+        uses: actions/checkout@v4
+
+      - name: Configure
+        run: cmake -S . -B _build ${{ env.CMAKE_OPTIONS }} -DCMAKE_INSTALL_PREFIX:STRING=${GITHUB_WORKSPACE}/_built
+
+      - name: Build
+        run: cmake --build _build --parallel
+
+      - name: Test installation
+        run: cmake --install _build --prefix ${GITHUB_WORKSPACE}/_built