diff --git a/.github/workflows/build-macos.yml b/.github/workflows/build-macos.yml
index 326746eae..96e488de2 100644
--- a/.github/workflows/build-macos.yml
+++ b/.github/workflows/build-macos.yml
@@ -27,10 +27,11 @@ jobs:
     # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
         os: [macos-14]
-        architecture: [x64, arm64]
-        compiler: [gcc]
+        architecture: [arm64]
+        compiler: [clang]
 
     steps:
     - name: Checkout repository
@@ -39,40 +40,27 @@ jobs:
     - name: Download dependencies
       shell: bash
       run: |
-        VERSION_BQPD="1.0.0"
-        VERSION_MUMPS="5.8.0"
+        VERSION_HIGHS="1.11.0"
         if [[ "${{matrix.architecture}}" == "x64" ]]; then
           PLATFORM="x86_64-apple-darwin"
         else
           PLATFORM="aarch64-apple-darwin"
         fi
-        wget https://github.com/leyffer/BQPD_jll.jl/releases/download/BQPD-v${VERSION_BQPD}%2B0/BQPD.v${VERSION_BQPD}.$PLATFORM-libgfortran5.tar.gz
-        wget https://github.com/amontoison/MUMPS_static_jll.jl/releases/download/MUMPS_static-v${VERSION_MUMPS}%2B0/MUMPS_static.v${VERSION_MUMPS}.$PLATFORM-libgfortran5.tar.gz
+        wget https://github.com/amontoison/HiGHS_static_jll.jl/releases/download/HiGHS_static-v${VERSION_HIGHS}%2B0/HiGHS_static.v${VERSION_HIGHS}.$PLATFORM-libgfortran5.tar.gz
         mkdir deps
-        tar -xzvf BQPD.v${VERSION_BQPD}.$PLATFORM-libgfortran5.tar.gz -C deps
-        tar -xzvf MUMPS_static.v${VERSION_MUMPS}.$PLATFORM-libgfortran5.tar.gz -C deps
-
-    - name: Install Fortran compiler
-      uses: fortran-lang/setup-fortran@main
-      with:
-        compiler: 'gcc'
-        version: '13'
+        mkdir deps/highs
+        tar -xzvf HiGHS_static.v${VERSION_HIGHS}.$PLATFORM-libgfortran5.tar.gz -C deps/highs
 
     - name: Configure CMake
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
       # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
       run: |
         cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}} \
-                                                -DMUMPS_INCLUDE_DIR=${{github.workspace}}/deps/include \
-                                                -DMETIS_INCLUDE_DIR=${{github.workspace}}/deps/include \
-                                                -DBQPD=${{github.workspace}}/deps/lib/libbqpd.a \
-                                                -DMETIS_LIBRARY=${{github.workspace}}/deps/lib/libmetis.a \
-                                                -DMUMPS_LIBRARY=${{github.workspace}}/deps/lib/libdmumps.a \
-                                                -DMUMPS_COMMON_LIBRARY=${{github.workspace}}/deps/lib/libmumps_common.a \
-                                                -DMUMPS_PORD_LIBRARY=${{github.workspace}}/deps/lib/libpord.a \
-                                                -DMUMPS_MPISEQ_LIBRARY=${{github.workspace}}/deps/lib/libmpiseq.a \
-                                                -DBLAS_LIBRARIES=${{github.workspace}}/deps/lib/libblas.a \
-                                                -DLAPACK_LIBRARIES=${{github.workspace}}/deps/lib/liblapack.a
+                                                -DCMAKE_C_COMPILER=clang \
+                                                -DCMAKE_CXX_COMPILER=clang++ \
+                                                -DHIGHS_DIR=${{github.workspace}}/deps/highs/lib/cmake/highs \
+                                                -DBUILD_STATIC_LIBS=ON \
+                                                -DBUILD_SHARED_LIBS=ON .
 
     - name: Build
       # Build your program with the given configuration
diff --git a/.github/workflows/build-msvc.yml b/.github/workflows/build-msvc.yml
index e5d9a0b08..73681f669 100644
--- a/.github/workflows/build-msvc.yml
+++ b/.github/workflows/build-msvc.yml
@@ -43,6 +43,7 @@ jobs:
       run: |
         VERSION_BQPD="1.0.0"
         VERSION_MUMPS="5.8.0"
+        VERSION_HIGHS="1.11.0"
         if [[ "${{matrix.architecture}}" == "x64" ]]; then
           PLATFORM="x86_64-w64-mingw32"
         else
@@ -51,9 +52,11 @@ jobs:
         choco install wget
         wget https://github.com/leyffer/BQPD_jll.jl/releases/download/BQPD-v${VERSION_BQPD}%2B0/BQPD.v${VERSION_BQPD}.$PLATFORM-libgfortran5.tar.gz
         wget https://github.com/amontoison/MUMPS_static_jll.jl/releases/download/MUMPS_static-v${VERSION_MUMPS}%2B0/MUMPS_static.v${VERSION_MUMPS}.$PLATFORM-libgfortran5.tar.gz
+        wget https://github.com/amontoison/HiGHS_static_jll.jl/releases/download/HiGHS_static-v${VERSION_HIGHS}%2B0/HiGHS_static.v${VERSION_HIGHS}.$PLATFORM-libgfortran5.tar.gz
         mkdir deps
         tar -xzvf BQPD.v${VERSION_BQPD}.$PLATFORM-libgfortran5.tar.gz -C deps
         tar -xzvf MUMPS_static.v${VERSION_MUMPS}.$PLATFORM-libgfortran5.tar.gz -C deps
+        tar -xzvf HiGHS_static.v${VERSION_HIGHS}.$PLATFORM-libgfortran5.tar.gz -C deps
 
     - name: Install Fortran compiler
       uses: fortran-lang/setup-fortran@main
@@ -70,16 +73,17 @@ jobs:
                 -DCMAKE_C_COMPILER=cl ^
                 -DCMAKE_CXX_COMPILER=cl ^
                 -DCMAKE_Fortran_COMPILER=ifx ^
-                -DMUMPS_INCLUDE_DIR=${{github.workspace}}\deps\include ^
-                -DMETIS_INCLUDE_DIR=${{github.workspace}}\deps\include ^
-                -DBQPD=${{github.workspace}}\deps\lib\libbqpd.a ^
-                -DMETIS_LIBRARY=${{github.workspace}}\deps\lib\libmetis.a ^
-                -DMUMPS_LIBRARY=${{github.workspace}}\deps\lib\libdmumps.a ^
-                -DMUMPS_COMMON_LIBRARY=${{github.workspace}}\deps\lib\libmumps_common.a ^
-                -DMUMPS_PORD_LIBRARY=${{github.workspace}}\deps\lib\libpord.a ^
-                -DMUMPS_MPISEQ_LIBRARY=${{github.workspace}}\deps\lib\libmpiseq.a ^
-                -DBLAS_LIBRARIES=${{github.workspace}}\deps\lib\libblas.a ^
-                -DLAPACK_LIBRARIES=${{github.workspace}}\deps\lib\liblapack.a ^
+                -DMUMPS_INCLUDE_DIR="${{github.workspace}}\deps\include" ^
+                -DMETIS_INCLUDE_DIR="${{github.workspace}}\deps\include" ^
+                -DBQPD="${{github.workspace}}\deps\lib\libbqpd.a" ^
+                -DMETIS_LIBRARY="${{github.workspace}}\deps\lib\libmetis.a" ^
+                -DMUMPS_LIBRARY="${{github.workspace}}\deps\lib\libdmumps.a" ^
+                -DMUMPS_COMMON_LIBRARY="${{github.workspace}}\deps\lib\libmumps_common.a" ^
+                -DMUMPS_PORD_LIBRARY="${{github.workspace}}\deps\lib\libpord.a" ^
+                -DMUMPS_MPISEQ_LIBRARY="${{github.workspace}}\deps\lib\libmpiseq.a" ^
+                -DBLAS_LIBRARIES="${{github.workspace}}\deps\lib\libblas.a" ^
+                -DLAPACK_LIBRARIES="${{github.workspace}}\deps\lib\liblapack.a" ^
+                -DHIGHS_DIR="${{github.workspace}}\deps" ^
                 -DBUILD_STATIC_LIBS=ON ^
                 -DBUILD_SHARED_LIBS=OFF .
         ) else (
diff --git a/.github/workflows/build-windows.yml b/.github/workflows/build-windows.yml
index 0dee53e60..8e3f8903f 100644
--- a/.github/workflows/build-windows.yml
+++ b/.github/workflows/build-windows.yml
@@ -27,6 +27,7 @@ jobs:
     # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
         os: [windows-latest]
         architecture: [x64]
@@ -40,13 +41,21 @@ jobs:
       run: |
         VERSION_BQPD="1.0.0"
         VERSION_MUMPS="5.8.0"
-        PLATFORM="x86_64-w64-mingw32"
+        VERSION_HIGHS="1.11.0"
+        if [[ "${{matrix.architecture}}" == "x64" ]]; then
+          PLATFORM="x86_64-w64-mingw32"
+        else
+          PLATFORM="i686-w64-mingw32"
+        fi
         choco install wget
         wget https://github.com/leyffer/BQPD_jll.jl/releases/download/BQPD-v${VERSION_BQPD}%2B0/BQPD.v${VERSION_BQPD}.$PLATFORM-libgfortran5.tar.gz
         wget https://github.com/amontoison/MUMPS_static_jll.jl/releases/download/MUMPS_static-v${VERSION_MUMPS}%2B0/MUMPS_static.v${VERSION_MUMPS}.$PLATFORM-libgfortran5.tar.gz
+        wget https://github.com/amontoison/HiGHS_static_jll.jl/releases/download/HiGHS_static-v${VERSION_HIGHS}%2B0/HiGHS_static.v${VERSION_HIGHS}.$PLATFORM-libgfortran5.tar.gz
         mkdir deps
+        mkdir deps/highs
         tar -xzvf BQPD.v${VERSION_BQPD}.$PLATFORM-libgfortran5.tar.gz -C deps
         tar -xzvf MUMPS_static.v${VERSION_MUMPS}.$PLATFORM-libgfortran5.tar.gz -C deps
+        tar -xzvf HiGHS_static.v${VERSION_HIGHS}.$PLATFORM-libgfortran5.tar.gz -C deps/highs
 
     - name: add MinGW64 directory to path
       run: echo "C:\tools\msys64\mingw64\bin" >> "$GITHUB_PATH"
@@ -65,9 +74,12 @@ jobs:
           -DMUMPS_COMMON_LIBRARY=${{github.workspace}}\deps\lib\libmumps_common.a ^
           -DMUMPS_PORD_LIBRARY=${{github.workspace}}\deps\lib\libpord.a ^
           -DMUMPS_MPISEQ_LIBRARY=${{github.workspace}}\deps\lib\libmpiseq.a ^
+          -DHIGHS_DIR=${{github.workspace}}\deps\highs\lib\cmake\highs ^
           -DBLAS_LIBRARIES=${{github.workspace}}\deps\lib\libblas.a ^
-          -DLAPACK_LIBRARIES=${{github.workspace}}\deps\lib\liblapack.a .
+          -DLAPACK_LIBRARIES=${{github.workspace}}\deps\lib\liblapack.a ^
+          -DBUILD_STATIC_LIBS=ON ^
+          -DBUILD_SHARED_LIBS=ON .
 
     - name: Build
       # Build your program with the given configuration
-      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} -j4
diff --git a/.github/workflows/unit-tests-linux.yml b/.github/workflows/unit-tests-linux.yml
index f5c774961..f0b32c4bf 100644
--- a/.github/workflows/unit-tests-linux.yml
+++ b/.github/workflows/unit-tests-linux.yml
@@ -1,6 +1,6 @@
 # This starter workflow is for a CMake project running on a single platform. There is a different starter workflow if you need cross-platform coverage.
 # See: https://github.com/actions/starter-workflows/blob/main/ci/cmake-multi-platform.yml
-name: Unit tests on Linux
+name: Unit tests on Ubuntu
 
 on:
   push:
@@ -33,21 +33,36 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - uses: Bacondish2023/setup-googletest@v1
-      with:
-        tag: v1.14.0
+    
+    - name: Install googletest
+      run: |
+        sudo apt-get install -y libgtest-dev cmake
+        mkdir -p $HOME/build
+        cd $HOME/build
+        sudo cmake /usr/src/googletest/googletest
+        sudo make
+        sudo cp lib/libgtest* /usr/lib/
+        cd ..
+        sudo rm -rf build
+        sudo mkdir /usr/local/lib/googletest
+        sudo ln -s /usr/lib/libgtest.a /usr/local/lib/googletest/libgtest.a
+        sudo ln -s /usr/lib/libgtest_main.a /usr/local/lib/googletest/libgtest_main.a
 
     - name: Download dependencies (BQPD and MUMPS_static)
       shell: bash
       run: |
         VERSION_BQPD="1.0.0"
         VERSION_MUMPS="5.8.0"
+        VERSION_HIGHS="1.11.0"
         PLATFORM="x86_64-linux-gnu"
         wget https://github.com/leyffer/BQPD_jll.jl/releases/download/BQPD-v${VERSION_BQPD}%2B0/BQPD.v${VERSION_BQPD}.$PLATFORM-libgfortran5.tar.gz
         wget https://github.com/amontoison/MUMPS_static_jll.jl/releases/download/MUMPS_static-v${VERSION_MUMPS}%2B0/MUMPS_static.v${VERSION_MUMPS}.$PLATFORM-libgfortran5.tar.gz
+        wget https://github.com/amontoison/HiGHS_static_jll.jl/releases/download/HiGHS_static-v${VERSION_HIGHS}%2B0/HiGHS_static.v${VERSION_HIGHS}.$PLATFORM-libgfortran5.tar.gz
         mkdir deps
+        mkdir deps/highs
         tar -xzvf BQPD.v${VERSION_BQPD}.$PLATFORM-libgfortran5.tar.gz -C deps
         tar -xzvf MUMPS_static.v${VERSION_MUMPS}.$PLATFORM-libgfortran5.tar.gz -C deps
+        tar -xzvf HiGHS_static.v${VERSION_HIGHS}.$PLATFORM-libgfortran5.tar.gz -C deps/highs
 
     - name: Configure CMake
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
@@ -64,14 +79,15 @@ jobs:
                                                 -DMUMPS_MPISEQ_LIBRARY=${{github.workspace}}/deps/lib/libmpiseq.a \
                                                 -DBLAS_LIBRARIES=${{github.workspace}}/deps/lib/libblas.a \
                                                 -DLAPACK_LIBRARIES=${{github.workspace}}/deps/lib/liblapack.a \
+                                                -DHIGHS_DIR=${{github.workspace}}/deps/highs/lib/cmake/highs \
                                                 -DBUILD_STATIC_LIBS=ON \
-                                                -DBUILD_SHARED_LIBS=OFF .
+                                                -DBUILD_SHARED_LIBS=ON .
 
     - name: Build
       # Build your program with the given configuration
-      run: cmake --build ${{github.workspace}}/build --target run_unotest --config ${{env.BUILD_TYPE}}
+      run: cmake --build ${{github.workspace}}/build --target run_unotest --config ${{env.BUILD_TYPE}} -j4
 
     - name: Test
       working-directory: ${{github.workspace}}/build
       # Execute unit tests
-      run: ./run_unotest
+      run: ./run_unotest
\ No newline at end of file