diff --git a/.appveyor.yml b/.appveyor.yml
deleted file mode 100644
index d8b202c..0000000
--- a/.appveyor.yml
+++ /dev/null
@@ -1,112 +0,0 @@
-image: Visual Studio 2015
-
-environment:
-  global:
-    REPO_DIR: pybox2d
-    PACKAGE_NAME: Box2D
-    BUILD_COMMIT: 2.3.10
-    BUILD_DEPENDS: "swig"
-    TEST_DEPENDS: "pytest"
-    CONDA_CHANNEL: conda-forge
-
-  matrix:
-    - PYTHON: "C:\\Miniconda"
-      PYTHON_VERSION: "2.7"
-      PYTHON_ARCH: "32"
-      TEST_DEPENDS: "pytest==4.6"
-    - PYTHON: "C:\\Miniconda-x64"
-      PYTHON_VERSION: "2.7"
-      PYTHON_ARCH: "64"
-      TEST_DEPENDS: "pytest==4.6"
-    - PYTHON: "C:\\Miniconda35"
-      PYTHON_VERSION: "3.5"
-      PYTHON_ARCH: "32"
-      BUILD_DEPENDS: "swig wheel"
-    - PYTHON: "C:\\Miniconda35-x64"
-      PYTHON_VERSION: "3.5"
-      PYTHON_ARCH: "64"
-      BUILD_DEPENDS: "swig wheel"
-    - PYTHON: "C:\\Miniconda36"
-      PYTHON_VERSION: "3.6"
-      PYTHON_ARCH: "32"
-    - PYTHON: "C:\\Miniconda36-x64"
-      PYTHON_VERSION: "3.6"
-      PYTHON_ARCH: "64"
-    - PYTHON: "C:\\Miniconda37"
-      PYTHON_VERSION: "3.7"
-      PYTHON_ARCH: "32"
-    - PYTHON: "C:\\Miniconda37-x64"
-      PYTHON_VERSION: "3.7"
-      PYTHON_ARCH: "64"
-    - PYTHON: "C:\\Miniconda37"
-      PYTHON_VERSION: "3.8"
-      PYTHON_ARCH: "32"
-    - PYTHON: "C:\\Miniconda37-x64"
-      PYTHON_VERSION: "3.8"
-      PYTHON_ARCH: "64"
-
-# We always use a 64-bit machine, but can build x86 distributions
-# with the TARGET_ARCH variable.
-platform:
-    - x64
-
-# matrix:
-#     fast_finish: true
-
-install:
-    # Install miniconda and fix headers
-    - SET PATH=%PYTHON%;%PYTHON%\Scripts;%PYTHON%\Library\bin;%PATH%
-    - conda info
-
-    # Check that we have the expected version and architecture for Python
-    - python --version
-    - python -c "import struct; print(struct.calcsize('P') * 8)"
-
-    - git clone --branch %BUILD_COMMIT% --recursive git://github.com/pybox2d/pybox2d.git pybox2d
-
-build_script:
-    # Install build requirements
-    - conda create --yes -c %CONDA_CHANNEL% -n build_env python=%PYTHON_VERSION% %BUILD_DEPENDS%
-    - activate build_env
-
-    - which python
-    - python -m pip install --upgrade pip wheel setuptools
-
-    # build wheel:
-    - cd %REPO_DIR%
-
-    # sigh
-    - sed -i -e "s/sirkne at gmail dot com/sirkne@gmail.com/" setup.py
-
-    - python setup.py build --force
-    - python setup.py bdist_wheel
-    - ls dist/*
-
-test_script:
-    # create test env
-    - conda create --yes -c %CONDA_CHANNEL% -n test_env python=%PYTHON_VERSION%
-    - activate test_env
-
-    # some issues with conda dependencies
-    - pip install %TEST_DEPENDS%
-
-    # install from wheel
-    - pip install --no-index --find-links dist/ %PACKAGE_NAME%
-
-    # run tests from install wheel
-    - cd ..
-    - python -c "import Box2D; print('Imported Box2D successfully')"
-    - pytest -vv --pyargs Box2D.tests
-
-after_test:
-    - cmd: conda upgrade -y python
-    - IF "%APPVEYOR_REPO_BRANCH%" == "master" (
-          python -m pip install twine &&
-          set HOME=%USERPROFILE% &&
-          python -m twine upload --verbose pybox2d\dist\*.whl --repository-url https://upload.pypi.org/legacy/ -u %PYPI_USERNAME% -p %PYPI_PASSWORD%
-      ) ELSE (
-          echo Wrong branch - not pushing to PyPI
-      )
-
-artifacts:
-    - path: pybox2d\dist\*
diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
new file mode 100644
index 0000000..81ad2a8
--- /dev/null
+++ b/.github/workflows/wheels.yml
@@ -0,0 +1,38 @@
+name: Build
+
+on: [push, pull_request]
+
+jobs:
+  build_wheels:
+    name: Build wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-13, macos-latest]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/checkout@v4
+        with:
+          repository: pybox2d/pybox2d
+          ref: 2.3.10
+          path: pybox2d
+
+      # Used to host cibuildwheel
+      - uses: actions/setup-python@v5
+
+      - name: Install cibuildwheel
+        run: python -m pip install cibuildwheel==2.22.0
+
+      - name: Build wheels
+        run: python -m cibuildwheel --output-dir wheelhouse
+        working-directory: pybox2d
+        # to supply options, put them in 'env', like:
+        # env:
+        #   CIBW_SOME_OPTION: value
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
+          path: ./wheelhouse/*.whl
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 9a9c2f7..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,151 +0,0 @@
-env:
-  global:
-    - REPO_DIR=pybox2d
-    # Commit from your-project that you want to build
-    - BUILD_COMMIT=2.3.10
-    # pip dependencies to _build_ your project
-    - BUILD_DEPENDS=""
-    # pip dependencies to _test_ your project.  Include any dependencies
-    # that you need, that are also specified in BUILD_DEPENDS, this will be
-    # a separate install.
-    - TEST_DEPENDS="pytest"
-    - UNICODE_WIDTH=32
-    - secure: "AQqNHDjCsrgPktnfWpQ8SdTVHJEApG/nbUzj62rIu1//mGZ8QTPrZsoiPEK9xHEBGLYKQN6DhtXxN3J9CsBopRjHU/MUdv371R0HLyxmfdhZvAlmNoqMHGriXpbSKImwhRIzBaGo5rISWF51tloUyc6isLUbobcnGraTZoTEv67/ETkQ+adkBgJT2pETXNuF5JBnaM92tvktAxaS1tQRlhqdH+6VAQdj6SjlK01iCec6MPjA8yhj4obltVm4Xt9aZcg/CBonYCc5EfJ5AXuE6AkqLYwnUQVhTUi/diO0TgUy3H/07d4h90hGy/LWwbZg6X7OgWSAEoLv3btsrPSQcqXarngt5+btVKvXLpa2JQUeF2gDwpk9d3+DxSOfsW37WPatOnWhZgKNPnOUuoQJ5tvlTagCSWCPUB5CptMZpTqR2PprZrLMyvVViz+ji0kztkLq7KntznUjdV9zaqNO8LfCm2YhXtCZQMAWum/qYMZW1UkKkIRimzaUH0Jzib45IMU6hS9gaXuyOXD3uSlnFBOGSl7YH39auh0JxWp4B+lalg0wtAogZHyPM+8wvFFoL6jKTHzaBVwCU8hic3FP4ZqxJ2QKAQJxjQXdclZTle0m6zYvwq6NKS0/O1AWWyX/vTgeWlP7fSNHmfyai6JXKYSTNPyQ2dyxK/eFvZalTL4="
-
-language: generic
-
-# For CPython macOS builds only, the minimum supported macOS version and
-# architectures of any C extensions in the wheel are set with the variable
-# MB_PYTHON_OSX_VER: 10.9 (64-bit only) or 10.6 (64/32-bit dual arch). By
-# default this is set to the highest available for the Python version selected
-# using MB_PYTHON_VERSION. You should only need to set this explicitly if you
-# are building a 10.6 dual-arch build for a CPython version where both a 10.9 and
-# 10.6 build are available (for example, 2.7 or 3.7).
-# All PyPy macOS builds are 64-bit only.
-
-# Required in Linux to invoke `docker` ourselves
-services: docker
-
-# Host distribution.  This is the distribution from which we run the build
-# and test containers, via docker.
-dist: xenial
-
-matrix:
-  include:
-    - os: osx
-      env:
-        - MB_PYTHON_VERSION=3.5
-    - os: osx
-      env:
-        - MB_PYTHON_VERSION=3.6
-    - os: osx
-      env:
-        - MB_PYTHON_VERSION=3.7
-    - os: osx
-      env:
-        - MB_PYTHON_VERSION=3.8
-    - os: osx
-      language: generic
-      env:
-        - MB_PYTHON_VERSION=pypy-7.3
-        - PLAT=darwin
-    - os: osx
-      language: generic
-      env:
-        - MB_PYTHON_VERSION=pypy3-7.3
-        - PLAT=darwin
-    - os: osx
-      env:
-        - MB_PYTHON_VERSION=2.7
-        - MB_PYTHON_OSX_VER=10.6
-        - TEST_DEPENDS="pytest==4.6"
-    - os: osx
-      env:
-        - MB_PYTHON_VERSION=2.7
-        - TEST_DEPENDS="pytest==4.6"
-
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=3.5
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=3.5
-        - PLAT=i686
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=3.6
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=3.6
-        - PLAT=i686
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=3.7
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=3.7
-        - PLAT=i686
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=3.8
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=3.8
-        - PLAT=i686
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=pypy-7.3
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=pypy3-7.3
-    - os: linux
-      env: 
-        - MB_PYTHON_VERSION=2.7
-        - TEST_DEPENDS="pytest==4.6"
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=2.7
-        - UNICODE_WIDTH=16
-        - TEST_DEPENDS="pytest==4.6"
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=2.7
-        - PLAT=i686
-        - TEST_DEPENDS="pytest==4.6"
-    - os: linux
-      env:
-        - MB_PYTHON_VERSION=2.7
-        - PLAT=i686
-        - UNICODE_WIDTH=16
-        - TEST_DEPENDS="pytest==4.6"
-
-before_install:
-    - source multibuild/common_utils.sh
-    - source multibuild/travis_steps.sh
-    - before_install
-
-install:
-    # Maybe get and clean and patch source
-    - clean_code $REPO_DIR $BUILD_COMMIT
-    - find $TRAVIS_BUILD_DIR
-    - build_wheel $REPO_DIR $PLAT
-
-script:
-    - install_run $PLAT
-
-after_success:
-    - if [ "$TRAVIS_OS_NAME" = "osx" ]; then wget https://repo.anaconda.com/miniconda/Miniconda3-latest-MacOSX-x86_64.sh -O miniconda.sh; fi
-    - if [ "$TRAVIS_OS_NAME" = "linux" ]; then wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh; fi
-    - bash miniconda.sh -b -p $HOME/miniconda
-    - source "$HOME/miniconda/etc/profile.d/conda.sh"
-    - hash -r && conda activate base
-    - pip install twine
-    # List the wheels
-    - ls $TRAVIS_BUILD_DIR/wheelhouse/*.whl
-
-    - >
-      if [ "$TRAVIS_BRANCH" == "master" ]; then
-        twine upload --verbose --skip-existing $TRAVIS_BUILD_DIR/wheelhouse/*.whl --repository-url https://upload.pypi.org/legacy/ -u __token__ -p $PYPI_PASSWORD;
-      else
-        echo "Not deploying until on master branch ($TRAVIS_BRANCH)";
-      fi
diff --git a/multibuild b/multibuild
deleted file mode 160000
index da36cd5..0000000
--- a/multibuild
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit da36cd5408e03cad504217de4a21bb8f19f2fb2f