diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e88f040..54e7ead 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -2,19 +2,39 @@ name: Build + Deploy
 
 on:
   push:
-    branches: [master]
+    branches: [main]
     tags: ["*.*.*"]
   pull_request:
-    branches: [master]
+    branches: [main]
 
 env:
-  PROJECT_NAME: "pyclipper"
-  BUILD_DEPENDS: "Cython setuptools>=25 setuptools_scm setuptools_scm_git_archive"
-  TEST_DEPENDS: "sympy unittest2 pytest"
+  CIBW_TEST_REQUIRES: "sympy pytest"
+  CIBW_TEST_COMMAND: pytest {package}/tests -v
 
 jobs:
-  build_unix:
 
+  build_sdist:
+    name: Build Source Distribution
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        # setuptools_scm won't work with shallow clone; fetch all history
+        fetch-depth: 0
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: "3.x"
+    - name: Build sdist
+      run: pipx run build --sdist
+    - name: Check metadata
+      run: pipx run twine check dist/*.tar.gz
+    - uses: actions/upload-artifact@v2
+      with:
+        path: dist/*.tar.gz
+
+  build_wheels:
+    name: ${{ matrix.type }} ${{ matrix.arch }} on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     defaults:
       run:
@@ -22,121 +42,96 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9]
-        os: [ubuntu-latest, macos-latest]
-        platform: [x64]
-    env:
-      REPO_DIR: "."
-      PLAT: "x86_64"
-      UNICODE_WIDTH: 32
-      MB_PYTHON_VERSION: ${{ matrix.python-version }}
-      TRAVIS_PYTHON_VERSION: ${{ matrix.python-version }}
+        os: [macos-latest, windows-latest]
+        arch: [auto64]
+        build: ["*"]
+        skip: ["pp*"]
+        include:
+          # the manylinux1 docker images only contain from python3.6 to 3.9
+          - os: ubuntu-latest
+            type: manylinux1
+            arch: auto64
+            build: "cp{36,37,38,39}-manylinux*"
+            CIBW_MANYLINUX_X86_64_IMAGE: manylinux1
+            CIBW_MANYLINUX_I686_IMAGE: manylinux1
+          # the manylinux2010 image also contains python 3.10
+          - os: ubuntu-latest
+            arch: auto64
+            type: manylinux2010
+            build: "pp*-manylinux* cp310-manylinux*"
+            CIBW_MANYLINUX_X86_64_IMAGE: manylinux2010
+            CIBW_MANYLINUX_I686_IMAGE: manylinux2010
 
+          - os: macos-latest
+            arch: universal2
+            build: "*"
+            skip: "pp*"
+
+          - os: windows-latest
+            arch: auto32
+            build: "*"
+            skip: "pp*"
     steps:
     - uses: actions/checkout@v2
       with:
-        submodules: recursive
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
-      with:
-        python-version: ${{ matrix.python-version }}
-        architecture: ${{ matrix.platform }}
-    - name: Set up environment variables
-      run: |
-        if [ "macos-latest" == "${{ matrix.os }}" ]; then
-          echo "TRAVIS_OS_NAME=osx" >> $GITHUB_ENV
-        else
-          echo "TRAVIS_OS_NAME=ubuntu" >> $GITHUB_ENV
-        fi
-    - name: Install virtualenv
-      run: |
-        python -m pip install --upgrade pip
-        pip install virtualenv
-    - name: Build and Install Wheels
-      run: |
-        source multibuild/common_utils.sh
-        source multibuild/travis_steps.sh
-        echo "------- BEFORE INSTALL --------"
-        before_install
-        echo "------- BUILD WHEEL --------"
-        build_wheel $REPO_DIR $PLAT
-        echo "------- INSTALL_RUN --------"
-        install_run $PLAT
-    - uses: actions/upload-artifact@v2
-      with:
-        name: ${{ env.PROJECT_NAME }}-py${{ matrix.python-version }}-${{ env.TRAVIS_OS_NAME }}-${{ matrix.platform }}
-        path: wheelhouse/*.whl
-
-  build_win:
-    runs-on: windows-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9]
-        platform: [x64, x86]
-    steps:
-    - uses: actions/checkout@v2
-      with:
-        submodules: recursive
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
-      with:
-        python-version: ${{ matrix.python-version }}
-        architecture: ${{ matrix.platform }}
-    - name: Set up virtual environment
-      run: |
-        python -m pip install --upgrade virtualenv
-        python -m virtualenv venv
-        venv\Scripts\activate
-        python -c "import sys; print(sys.version); print(sys.executable)"
-        python -m pip install --upgrade pip
-        pip install --upgrade setuptools wheel
-        pip install ${{ env.BUILD_DEPENDS }}
-        pip install ${{ env.TEST_DEPENDS }}
-    - name: Build wheel
-      run: |
-        venv\Scripts\activate
-        pip wheel --no-deps -w wheelhouse .
-    - name: Run the tests
-      run: |
-        venv\Scripts\activate
-        pip install --no-index --find-links wheelhouse ${{ env.PROJECT_NAME }}
-        pytest
-    - uses: actions/upload-artifact@v2
-      with:
-        name: ${{ env.PROJECT_NAME }}-py${{ matrix.python-version }}-win-${{ matrix.platform }}
-        path: wheelhouse/*.whl
-
-  deploy:
-    # only run if the commit is tagged...
-    if: startsWith(github.ref, 'refs/tags/')
-    # ... and all build jobs completed successfully
-    needs:
-        - build_unix
-        - build_win
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v2
+        fetch-depth: 0
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
         python-version: "3.x"
     - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install --upgrade setuptools wheel twine
-        pip install ${{ env.BUILD_DEPENDS }}
-    - name: Download artifacts from build jobs
-      uses: actions/download-artifact@v2
+      run: pip install cibuildwheel
+    - name: Build Wheels
+      run: python -m cibuildwheel --output-dir wheelhouse .
+      env:
+        CIBW_BUILD: ${{ matrix.build }}
+        CIBW_MANYLINUX_I686_IMAGE: ${{ matrix.CIBW_MANYLINUX_I686_IMAGE }}
+        CIBW_MANYLINUX_X86_64_IMAGE: ${{ matrix.CIBW_MANYLINUX_X86_64_IMAGE }}
+        CIBW_ARCHS: ${{ matrix.arch }}
+        CIBW_SKIP: ${{ matrix.skip }}
+    - uses: actions/upload-artifact@v2
       with:
-        path: wheelhouse/
-    - name: Move wheels to dist/ directory
-      run: |
-        ls wheelhouse/*
-        mkdir -p dist/
-        for wheel_dir in wheelhouse/${{ env.PROJECT_NAME }}*/; do
-          mv "${wheel_dir}"/*.whl dist/
-        done
+        path: wheelhouse/*.whl
+
+  build_arch_wheels:
+    name: py${{ matrix.python }} on ${{ matrix.arch }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        # aarch64 uses qemu so it's slow, build each py version in parallel jobs
+        python: [36, 37, 38, 39, 310]
+        arch: [aarch64]
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - uses: docker/setup-qemu-action@v1.2.0
+      with:
+        platforms: all
+    - name: Install dependencies
+      run: pip install cibuildwheel
+    - name: Build Wheels
+      run: python -m cibuildwheel --output-dir wheelhouse .
+      env:
+        CIBW_BUILD: cp${{ matrix.python }}-manylinux*
+        CIBW_ARCHS: ${{ matrix.arch }}
+    - uses: actions/upload-artifact@v2
+      with:
+        path: wheelhouse/*.whl
+
+  deploy:
+    name: Upload if tagged commit
+    if: startsWith(github.ref, 'refs/tags/')
+    # but only if all build jobs completed successfully
+    needs: [build_wheels, build_arch_wheels, build_sdist]
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/download-artifact@v2
+      with:
+        name: artifact
+        path: dist
+
     - name: Extract release notes from annotated tag message
       id: release_notes
       env:
@@ -159,6 +154,7 @@ jobs:
           echo "Tag does not contain pre-release suffix"
           echo "IS_PRERELEASE=false" >> "$GITHUB_ENV"
         fi
+
     - name: Create GitHub release
       id: create_release
       uses: actions/create-release@v1
@@ -171,15 +167,8 @@ jobs:
         body_path: "${{ runner.temp }}/release_notes.md"
         draft: false
         prerelease: ${{ env.IS_PRERELEASE }}
-    - name: Build and publish
-      env:
-        TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
-        TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
-      run: |
-        if [ "$IS_PRERELEASE" == true ]; then
-          echo "DEBUG: This is a pre-release"
-        else
-          echo "DEBUG: This is a final release"
-        fi
-        python setup.py sdist
-        twine upload dist/*
+
+    - uses: pypa/gh-action-pypi-publish@v1.4.2
+      with:
+        user: __token__
+        password: ${{ secrets.PYPI_PASSWORD }}
diff --git a/.gitmodules b/.gitmodules
index 208f001..e69de29 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +0,0 @@
-[submodule "multibuild"]
-	path = multibuild
-	url = https://github.com/matthew-brett/multibuild
diff --git a/config.sh b/config.sh
deleted file mode 100644
index 8f90a4b..0000000
--- a/config.sh
+++ /dev/null
@@ -1,16 +0,0 @@
-# Define custom utilities
-# Test for OSX with [ -n "$IS_OSX" ]
-
-function pre_build {
-    # Any stuff that you need to do before you start building the wheels
-    # Runs in the root directory of this repository.
-    :
-}
-
-function run_tests {
-    # check we have the expected version and architecture for Python
-    python -c "import sys; print(sys.version)"
-    python -c "import struct; print(struct.calcsize('P') * 8)"
-    # run the test suite
-    pytest -v ../tests
-}
diff --git a/multibuild b/multibuild
deleted file mode 160000
index 938d957..0000000
--- a/multibuild
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 938d95797015a1b742cf5e71b8b2f525a0d9ed58
diff --git a/pyproject.toml b/pyproject.toml
index 595e1af..b99dd09 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,5 +3,8 @@ requires = [
     "setuptools",
     "wheel",
     "setuptools_scm",
+    "setuptools_scm_git_archive",
     "cython",
 ]
+
+build-backend = "setuptools.build_meta"
diff --git a/setup.cfg b/setup.cfg
index d6b80c2..3202007 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,9 +1,6 @@
 [metadata]
 description_file = README.rst
 
-[sdist]
-formats = zip
-
 [aliases]
 test = pytest
 
diff --git a/setup.py b/setup.py
index b102124..899bdd1 100755
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,7 @@ if dev_mode:
         """
         def run(self):
             from Cython.Build import cythonize
-            cythonize(sources, language='c++')
+            cythonize(sources, language_level="2")
             _sdist.run(self)
 
     cmdclass = {'sdist': sdist, 'build_ext': build_ext}
@@ -67,6 +67,7 @@ setup(
     use_scm_version={"write_to": "src/pyclipper/_version.py"},
     description='Cython wrapper for the C++ translation of the Angus Johnson\'s Clipper library (ver. 6.4.2)',
     long_description=long_description,
+    long_description_content_type="text/x-rst",
     author='Angus Johnson, Maxime Chalton, Lukas Treyer, Gregor Ratajc',
     author_email='me@gregorratajc.com',
     maintainer="Cosimo Lupo",
diff --git a/src/pyclipper/_pyclipper.pyx b/src/pyclipper/_pyclipper.pyx
index 8acf584..bb179a1 100644
--- a/src/pyclipper/_pyclipper.pyx
+++ b/src/pyclipper/_pyclipper.pyx
@@ -1,3 +1,4 @@
+# distutils: language=c++
 """
 Cython wrapper for the C++ translation of the Angus Johnson's Clipper
 library (ver. 6.2.1) (http://www.angusj.com/delphi/clipper.php)