diff --git a/pyproject.toml b/pyproject.toml
index 60afb6ef..ab114de4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,7 @@
 [build-system]
 requires = [
     "setuptools>=71.0.3",
+    # "setuptools>=59.6.0", # for 3.6
 ]
 
 build-backend = "setuptools.build_meta"