diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
new file mode 100644
index 0000000..752967b
--- /dev/null
+++ b/.github/workflows/CI.yaml
@@ -0,0 +1,52 @@
+name: ci
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        os: [ "ubuntu-latest", "macos-latest", "windows-latest" ]
+        python-version: [ "3.10", "3.11"]
+    defaults:
+      run:
+        shell: bash
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v3
+      - name: Set up python ${{ matrix.python-version }}
+        id: setup-python
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
+        with:
+          virtualenvs-create: true
+          virtualenvs-in-project: true
+      - name: Load cached venv
+        id: cached-poetry-dependencies
+        uses: actions/cache@v3
+        with:
+          path: .venv
+          key: venv-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('**/poetry.lock') }}
+      - name: Install dependencies
+        if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
+        run: poetry install --no-interaction --no-root
+      - name: Install library
+        run: poetry install --no-interaction
+      - name: Run tests
+        run: poetry run pytest -v tests/ --cov=deemian --cov-report=xml
+      - name: Use Codecov to track coverage
+        uses: codecov/codecov-action@v3
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+        with:
+          files: ./coverage.xml
+          flags: unittests
+          name: codecov-${{ matrix.os }}-py${{ matrix.python-version }}
+          verbose: true