diff --git a/pyproject.toml b/pyproject.toml
index a5357d0..558a41c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,3 +5,7 @@
 [build-system]
 requires = ["setuptools"]
 build-backend = "setuptools.build_meta"
+
+[tool.pytest.ini_options]
+testpaths = "tests"
+addopts = "--cov=pyphenopop --cov-report=xml"