diff --git a/.github/workflows/linux-ci.yml b/.github/workflows/linux-ci.yml
index aa814fed..5796a4bc 100644
--- a/.github/workflows/linux-ci.yml
+++ b/.github/workflows/linux-ci.yml
@@ -22,27 +22,23 @@ jobs:
         build_static: [true, false]
         download_requirements: [sudo apt install -y -qq gfortran liblapack-dev libmetis-dev libnauty2-dev]
         include:
-          - os: macos-12
+          - os: macos-13
             build_static: false
-            flags: CC=clang OSX=12
+            flags: CC=clang OSX=13
             download_requirements: brew install metis bash
-          - os: macos-12
+          - os: macos-13
             build_static: false
-            flags: CC=gcc-11 CXX=g++-11 OSX=12
-            download_requirements: brew install metis bash
-          - os: macos-12
-            build_static: false
-            flags: CC=gcc-12 CXX=g++-12 OSX=12
+            flags: CC=gcc-13 CXX=g++-13 OSX=13 ADD_CXXFLAGS=-Wl,-ld_classic
             download_requirements: brew install metis bash
     steps:
       - name: Checkout source
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: ${{ github.event.repository.name }}
       - name: Install required packages from package manager
         run: ${{ matrix.download_requirements }}
       - name: Checkout coinbrew
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: coin-or/coinbrew
           path: coinbrew
@@ -54,6 +50,7 @@ jobs:
           ADD_BUILD_ARGS=()
           ADD_BUILD_ARGS+=( --tests main --enable-relocatable )
           ADD_BUILD_ARGS+=( --verbosity 2 )
+          [[ ${{ matrix.os }} == ubuntu* ]] && ADD_ARGS+=( --with-nauty-incdir=/usr/include/x86_64-linux-gnu/nauty --with-nauty-lib="-L/usr/lib/ -lnauty" )
           [[ ${{ matrix.build_static }} == "true" ]] && \
           ADD_BUILD_ARGS+=( --disable-shared )
           bash coinbrew/coinbrew fetch ${{ github.event.repository.name }} --skip-update \
@@ -69,7 +66,7 @@ jobs:
           cp ${{ github.event.repository.name }}/LICENSE dist/
           tar -czvf release.tar.gz -C dist .
       - name: Checkout package name generation script
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: coin-or-tools/platform-analysis-tools
           path: tools
@@ -82,15 +79,11 @@ jobs:
           [[ ${{ matrix.build_static }} == "true" ]] && buildtype=static || buildtype=
           platform_str=`python3 tools/hsf_get_platform.py -b $buildtype`
           echo "platform_string=${platform_str}" >> $GITHUB_ENV
-      - name: Remove slash from head ref
-        run: |
-          filtered_head_ref=$(echo ${{ github.head_ref }} | awk -F'/' '{print $NF}')
-          echo "filtered_head_ref=${filtered_head_ref}" >> $GITHUB_ENV
       - name: Upload Artifact
         if: ${{ github.event_name == 'pull_request'}}
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
-          name: ${{ github.event.repository.name }}-${{ env.filtered_head_ref }}-${{ env.platform_string }}.tar.gz
+          name: ${{ github.event.repository.name }}-${{ env.platform_string }}.tar.gz
           path: release.tar.gz
           if-no-files-found: error
       - name: Upload package to release
diff --git a/.github/workflows/windows-ci.yml b/.github/workflows/windows-ci.yml
index 7274cde7..42b63621 100644
--- a/.github/workflows/windows-ci.yml
+++ b/.github/workflows/windows-ci.yml
@@ -22,18 +22,16 @@ jobs:
         include: [
           { os: windows-2019, arch: x86_64, msystem: mingw64, debug: true, suffix: "-dbg" },
           { os: windows-2019, arch: x86_64, msystem: mingw64, debug: false, suffix: "" },
-          { os: windows-2019, arch: i686, msystem: mingw32, debug: true, suffix: "-dbg" },
-          { os: windows-2019, arch: i686, msystem: mingw32, debug: false, suffix: "" },
           { os: windows-2019, arch: msvc, msystem: mingw64, debug: false, suffix: "-md" },
           { os: windows-2022, arch: msvc, msystem: mingw64, debug: false, suffix: "-md" },
         ]
     steps:
       - name: Checkout source
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: ${{ github.event.repository.name }}
       - name: Checkout coinbrew
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: coin-or/coinbrew
           path: coinbrew
@@ -63,7 +61,7 @@ jobs:
           ADD_BUILD_ARGS+=( --build=x86_64-w64-mingw32 --tests main --enable-relocatable )
           ADD_BUILD_ARGS+=( --verbosity 2 )
           [[ ${{ matrix.debug }} == "true" ]] && ADD_BUILD_ARGS+=( --enable-debug )
-          [[ ${{ matrix.arch }} == "msvc" ]] && ADD_BUILD_ARGS+=( --enable-msvc )
+          [[ ${{ matrix.arch }} == "msvc" ]] && ADD_BUILD_ARGS+=( --enable-msvc=MD )
           ./coinbrew/coinbrew fetch ${{ github.event.repository.name }} --skip-update "${ADD_ARGS[@]}"
           ./coinbrew/coinbrew build ${{ github.event.repository.name }} ${{ env.host_flag }} \
           "${ADD_ARGS[@]}" "${ADD_BUILD_ARGS[@]}"
@@ -71,7 +69,7 @@ jobs:
           cp ${{ github.event.repository.name }}/LICENSE dist/
         shell: msys2 {0}
       - name: Upload failed build directory
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: ${{ matrix.os}}-{{ matrix.arch }}-debug=${{ matrix.debug }}-failedbuild
@@ -87,16 +85,11 @@ jobs:
           echo "package_suffix=${{ matrix.arch }}-w64-${{ matrix.msystem }}${{ matrix.suffix }}" >> $GITHUB_ENV
         shell: msys2 {0}
         if: ${{ matrix.arch != 'msvc' }}
-      - name: Remove slash from head ref
-        run: |
-          filtered_head_ref=$(echo ${{ github.head_ref }} | awk -F'/' '{print $NF}')
-          echo "filtered_head_ref=${filtered_head_ref}" >> $GITHUB_ENV
-        shell: msys2 {0}
       - name: Upload artifact
         if: ${{ github.event_name == 'pull_request'}}
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
-          name: ${{ github.event.repository.name }}-${{ env.filtered_head_ref }}-${{ env.package_suffix }}
+          name: ${{ github.event.repository.name }}-${{ env.package_suffix }}
           path: dist
           if-no-files-found: error
       - name: Zip up dist contents for release