diff --git a/Makefile b/Makefile
index 0ad836f..06b7dde 100644
--- a/Makefile
+++ b/Makefile
@@ -6,8 +6,7 @@ test:
 clean:
 	rm -rf build tmp dist *.egg-info *.so .eggs
 
-# build:
-# 	python setup.py sdist
+
 
 build:
 	pip install .
diff --git a/pyproject.toml b/pyproject.toml
index 2c2cf1d..a15a2ea 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,3 @@
 [build-system]
-requires = ["setuptools", "pybind11"]
+requires = ["setuptools>=42", "pybind11>=2.9"]
 build-backend = "setuptools.build_meta"
\ No newline at end of file