diff --git a/pyproject.toml b/pyproject.toml
index be1f7d8..eb5a91f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,8 +23,15 @@ bpe-jigsaw = "bpe_jigsaw.cli:main"
 requires = ["uv_build>=0.9.4,<0.10.0"]
 build-backend = "uv_build"
 
+[tool.pytest.ini_options]
+pythonpath = "src"
+testpaths=["tests"]
+norecursedirs=[".git", ".venv"]
+addopts = ["import-mode=importlib"]
+
 [dependency-groups]
 dev = [
     "pytest>=8.4.2",
     "pytest-cov>=7.0.0",
 ]
+