--- pyproject.toml.orig	2025-11-23 11:19:54 UTC
+++ pyproject.toml
@@ -5,8 +5,7 @@ keywords = ["backport", "backports", "pep-784", "zstd"
 description = "Backport of compression.zstd"
 readme = { file = "README.md", content-type = "text/markdown" }
 keywords = ["backport", "backports", "pep-784", "zstd"]
-license = "PSF-2.0"
-license-files = ["LICENSE.txt", "LICENSE_zstd.txt"]
+license = {text = "PSF-2.0"}
 classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Intended Audience :: Developers",
@@ -31,7 +30,7 @@ Source = "https://github.com/rogdham/backports.zstd"
 #
 
 [build-system]
-requires = ["setuptools>=80"]
+requires = ["setuptools>=61"]
 build-backend = "setuptools.build_meta"
 
 [tool.setuptools.packages.find]