diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..5f8f040
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,48 @@
+name: Tests
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.8, 3.9]
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install Poetry
+      uses: snok/install-poetry@v1.1.1
+      with:
+        version: 1.1.4
+        virtualenvs-create: true
+        virtualenvs-in-project: true
+    - name: Load cached venv
+      id: cached-poetry-dependencies
+      uses: actions/cache@v2
+      with:
+        path: .venv
+        key: venv-${{ runner.os }}-${{ hashFiles('**/poetry.lock') }}
+    - name: Install dependencies
+      if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
+      run: poetry install --no-interaction --no-root
+    - name: Install library
+      run: poetry install --no-interaction
+    - name: Linting
+      run: |
+        poetry run tox -e isort-check
+        poetry run tox -e black-check
+    - name: Run tests
+      env:
+        TOX_ENV: py${{ matrix.python-version }}
+      run: |
+        poetry run tox -e $TOX_ENV
diff --git a/tox.ini b/tox.ini
index dc5fd27..3253907 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
 isolated_build = True
 skipsdist = True
-envlist = py39,py38
+envlist = py3.9,py3.8
 requires =
     tox-poetry-dev-dependencies
 
@@ -9,7 +9,9 @@ requires =
 # note tox will use the same python version as under what tox is installed to package
 # so unless this is python 3 you can require a given python version for the packaging
 # environment via the basepython key
-basepython = python3
+basepython =
+    py3.9: python3.9
+    py3.8: python3.8
 
 [testenv:isort-check]
 commands = isort -c --diff clerk/ tests/
@@ -18,7 +20,7 @@ commands = isort -c --diff clerk/ tests/
 commands = black --check clerk/ tests/
 
 [testenv]
-env =
+setenv =
     PYTHONHASHSEED = 1
 deps = .
 commands = pytest {posargs}