diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
new file mode 100644
index 0000000..39c4f32
--- /dev/null
+++ b/.github/workflows/pytest.yaml
@@ -0,0 +1,38 @@
+name: pytest
+
+on:
+  pull_request:
+    paths:
+      - "scripts/**"
+      - "src/traitmech/**"
+      - "tests/**"
+      - "pyproject.toml"
+      - ".github/workflows/pytest.yaml"
+  push:
+    branches: [main]
+    paths:
+      - "scripts/**"
+      - "src/traitmech/**"
+      - "tests/**"
+      - "pyproject.toml"
+      - ".github/workflows/pytest.yaml"
+  workflow_dispatch:
+
+jobs:
+  pytest:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: astral-sh/setup-uv@v3
+        with:
+          enable-cache: true
+
+      - name: Set up Python
+        run: uv python install 3.12
+
+      - name: Install dependencies
+        run: uv sync --extra dev
+
+      - name: Run pytest
+        run: uv run pytest tests/ -v --tb=short