diff --git a/pyproject.toml b/pyproject.toml
index 974ecf9..e8c2732 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,6 +22,7 @@ where = ["src"]
 
 [tool.pytest.ini_options]
 testpaths = ["tests"]
+pythonpath = ["."]
 
 [tool.ruff]
 line-length = 99