diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 0000000..331322b
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,26 @@
+name: tests
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: astral-sh/setup-uv@v6
+        with:
+          enable-cache: true
+
+      # Release binary rather than gitleaks-action, which needs a license for organizations.
+      - name: Install gitleaks
+        run: |
+          curl -sSfL https://github.com/gitleaks/gitleaks/releases/download/v8.30.1/gitleaks_8.30.1_linux_x64.tar.gz \
+            | sudo tar -xz -C /usr/local/bin gitleaks
+          gitleaks version
+
+      - run: uv sync --locked
+      - run: uv run pytest