diff --git a/pyproject.toml b/pyproject.toml
index ac01283..23082eb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,7 @@
 [build-system]
 requires = ["setuptools>=42", "wheel", "pybind11>=2.6.0", "versioneer-518"]
 build-backend = "setuptools.build_meta"
+
+[tool.black]
+line-length = 108
+target-version = ['py37']
\ No newline at end of file