diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 0000000..a87de45
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,33 @@
+name: tests
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+
+# Cancel in-progress runs for the same PR / branch when a new commit lands.
+concurrency:
+  group: tests-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  tests:
+    name: tests (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Configure
+        run: cmake -S tests -B tests/build
+
+      - name: Build
+        run: cmake --build tests/build --config Release
+
+      - name: Run tests
+        run: ctest --test-dir tests/build --output-on-failure --build-config Release