diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 00000000..fedb7306
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,54 @@
+name: Testing
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+jobs:
+  rspec:
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: ['2.5.8', '2.6.6', '2.7.2']
+        rails: ['5.2.4', '6.0.3']
+    runs-on: ubuntu-20.04
+    name: Ruby ${{ matrix.ruby }} / Rails ${{ matrix.rails }}
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+
+      - name: Install gems
+        env:
+          RAILS_VERSION: ${{ matrix.rails }}
+        run: |
+          gem install bundler
+          bundle install --jobs 4 --retry 3
+
+      - name: Run Rubocop
+        run: make ruby-lint
+
+      - name: Download CodeClimate reporter
+        if: ${{ matrix.ruby == '2.7.2' && matrix.rails == '6.0.3' }}
+        run: |
+          curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
+          chmod +x ./cc-test-reporter
+          ./cc-test-reporter before-build
+
+      - name: Run RSpec
+        run: make rspec
+
+      - name: Report coverage to CodeClimate
+        if: ${{ matrix.ruby == '2.7.2' && matrix.rails == '6.0.3' }}
+        env:
+          CC_TEST_REPORTER_ID: ${{ secrets.CC_TEST_REPORTER_ID }}
+          GIT_BRANCH: ${{ steps.extract_branch.outputs.branch }}
+          GIT_COMMIT_SHA: ${{ github.sha }}
+        run: ./cc-test-reporter after-build -t simplecov
+
+      - name: Run Nanoc Check
+        if: ${{ matrix.ruby == '2.7.2' && matrix.rails == '6.0.3' }}
+        run: make nanoc-check-all