diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..f540a67
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,38 @@
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
+
+name: Build and test
+
+on:
+  push:
+    branches: '**'
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [2.7, 3.5, 3.7, 3.9, pypy3]
+      # don't cancel every other job if one fails
+      fail-fast: false
+
+    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 dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pytest wheel
+        pip install -e .
+    - name: Set up pokedex
+      run: pokedex setup -v
+    - name: Test with pytest
+      run: pytest
+    - name: Dump database and check for differences
+      run: |
+        pokedex dump
+        git --no-pager diff --exit-code pokedex/data/csv/