diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 06a8dcf..7425020 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -49,6 +49,40 @@ jobs:
     # See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
     # run: ctest -C ${{env.BUILD_TYPE}}
 
+  ubuntu20:
+    runs-on: ubuntu-20.04
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: awalsh128/cache-apt-pkgs-action@v1.3.0
+        with:
+          packages: libwebkit2gtk-4.0-dev libcurl4-openssl-dev libcrypto++-dev ninja-build
+
+      - name: Install boost
+        uses: MarkusJx/install-boost@v2.4.1
+        id: install-boost
+        with:
+          # REQUIRED: Specify the required boost version
+          # A list of supported versions can be found here:
+          # https://github.com/MarkusJx/prebuilt-boost/blob/main/versions-manifest.json
+          boost_version: 1.81.0
+          # OPTIONAL: Specify a platform version
+          platform_version: 20.04
+
+      - name: Setup clang
+        uses: egor-tensin/setup-clang@v1
+        with:
+          version: 15
+          platform: x64
+
+      - name: Configure CMake
+        run: cmake -B ${{github.workspace}}/build/clang_${{env.BUILD_TYPE}} -G"Ninja" -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} -DNUI_BUILD_EXAMPLES=off -DCMAKE_CXX_EXTENSIONS=on -DCMAKE_CXX_COMPILER=c++ -DCMAKE_C_COMPILER=cc -DCMAKE_CXX_STANDARD=20
+        env:
+          BOOST_ROOT: ${{ steps.install-boost.outputs.BOOST_ROOT }}
+
+      - name: Build
+        run: cmake --build ${{github.workspace}}/build/clang_${{env.BUILD_TYPE}} --config ${{env.BUILD_TYPE}}
+
   windows-msys2:
     runs-on: windows-2022
     defaults: