diff --git a/pyproject.toml b/pyproject.toml
index 2ed7731..0ac8333 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -63,3 +63,6 @@ exclude = []
 [tool.ruff.isort]
 known-first-party = ["jax-finufft"]
 combine-as-imports = true
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]