diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..e3fe02c
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,53 @@
+name: ci
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+jobs:
+  pytest:
+    strategy:
+      fail-fast: false  # https://github.com/actions/runner-images#available-images
+      matrix:  # https://github.com/actions/python-versions/releases
+        os: [ubuntu-26.04]  # , ubuntu-26.04-arm, macos-latest, macos-26-intel, windows-latest, windows-11-arm]
+        # python-version: ["3.10", "3.12", "3.14", "3.14t", "3.15", "pypy-3.11"]
+        python-version: [3.x]
+    runs-on: ${{ matrix.os }}
+    steps:
+      #- uses: leafo/gh-actions-lua@v13
+      #  with:
+      #    luaVersion: 5.1.5  # https://www.lua.org/versions.html
+      #- uses: leafo/gh-actions-luarocks@v6
+      - if: runner.os == 'macOS'
+        run: |
+          brew install pkg-config luarocks
+          echo "PKG_CONFIG_PATH=$(brew --prefix lua)/lib/pkgconfig" >> "$GITHUB_ENV"
+          echo "LUA_DIR=$(brew --prefix lua)" >> "$GITHUB_ENV"
+      - if: runner.os == 'Linux'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y lua5.1 liblua5.1-0-dev luarocks
+      - run: lua -h || lua -v
+      - uses: actions/checkout@v6
+      - uses: actions/setup-python@v6
+        with:
+          python-version: ${{ matrix.python-version }}
+          allow-prereleases: true
+      - run: pip install --upgrade pip
+      - env:
+          PYTHON_LIBRT: "amd64"  # "x64"
+        run: pip install --editable . || true  #  TODO: Always fails even if $PYTHON_LIBRT is defined
+      - run: luarocks install lunatic-python || true  # TODO: Always fails! luarocks: command not found
+      # - run: pip install lunatic-python || true  # Install from PyPI -- Always fails!
+      - run: pip install lunatic-python-universal  # Install from PyPI
+      - shell: python  # Sanity check
+        run: |
+          import lua
+          lg = lua.globals()
+          print(f"{type(lg) = }")
+          print(f"{type(lg.string) = }")
+          print(f"{type(lg.string.lower) = }")
+          print(f"{lg.string.lower('Hello world!') = }")
+      - run: python tests/test_lua.py || true  # Segmentation fault (core dumped)
+      - run: pip install pytest
+      - run: pytest || true  # TODO: Write some pytests
+      - run: pytest --doctest-modules || true  # TODO: Write some pytests