diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d9f6a3b9b..d3b1fba45 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -34,6 +34,9 @@ jobs:
           - os: "ubuntu-latest"
             cibuild: "*musllinux*"
             cibw_arch: "musllinux"
+          - os: "ubuntu-24.04-arm"  # aarch64 manylinux on ARM runner
+            cibuild: "*manylinux*"
+            cibw_arch: "aarch64"
     steps:
       - name: Free Disk Space (Ubuntu)
         if: matrix.os == 'ubuntu-latest'
@@ -48,29 +51,44 @@ jobs:
         uses: styfle/cancel-workflow-action@0.12.1
       - uses: actions/checkout@v4
       - name: ccache
+        if: matrix.os != 'ubuntu-24.04-arm'
         uses: hendrikmuhs/ccache-action@v1.2
         with:
           key: ${{ github.job }}-${{ matrix.os }}-${{ matrix.cibuild }}  # Make cache specific to OS
           max-size: "5G"
       - name: Install dependencies
+        if: matrix.os != 'ubuntu-24.04-arm'
         run: |
           env
           export PATH="/usr/lib/ccache:/usr/local/opt/ccache/libexec:$PATH"
           echo "/usr/lib/ccache:/usr/local/opt/ccache/libexec" >> $GITHUB_PATH
           HOST_CCACHE_DIR="$(ccache -k cache_dir)"
           mkdir -p $HOST_CCACHE_DIR
-      - name: Build wheels  # check https://cibuildwheel.readthedocs.io/en/stable/setup/#github-actions
+      - name: Build wheels (ARM)
+        if: matrix.os == 'ubuntu-24.04-arm'
+        uses: pypa/cibuildwheel@v2.23.3
+        env:
+          # override the default CentOS “yum install … ccache” and drop ccache
+          CIBW_BEFORE_ALL_LINUX: |
+            yum install -y \
+              zlib-devel \
+              curl-devel \
+              expat-devel \
+              libpng-devel
+          CIBW_BEFORE_BUILD_LINUX: "true"
+          CIBW_BUILD: ${{ matrix.cibuild }}
+          CIBW_ARCHS_LINUX: ${{ matrix.cibw_arch }}
+
+      - name: Build wheels (all other platforms)
+        if: matrix.os != 'ubuntu-24.04-arm'
         uses: pypa/cibuildwheel@v2.23.3
-        # to supply options, put them in 'env', like:
-        # env:
-        #   CIBW_SOME_OPTION: value
         env:
           CIBW_BUILD: ${{ matrix.cibuild }}
           CIBW_ARCHS_MACOS: ${{ matrix.macos-arch }}
           CIBW_DEPENDENCY_VERSIONS_MACOS: cibw_constraints.txt
 
       - name: Download Cache from Docker (linux only)
-        if: ${{ runner.os == 'Linux' }}
+        if: runner.os == 'Linux' && matrix.os != 'ubuntu-24.04-arm'
         # hack until https://github.com/pypa/cibuildwheel/issues/1030 is fixed
         run: |
           env