diff --git a/pyproject.toml b/pyproject.toml
index 28a2f66..4510edf 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=64", "wheel"]
+requires = ["setuptools>=77", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -8,7 +8,8 @@ dynamic = ["version"]
 description = "Natural-language code transformation as a library: generate unified diffs with LLMs and apply them resiliently with smartapply. Formerly gptdiff."
 readme = "README.md"
 requires-python = ">=3.10"
-license = { text = "MIT" }
+license = "MIT"
+license-files = ["LICENSE.txt"]
 authors = [{ name = "255labs" }]
 keywords = [
     "patchling",
@@ -23,7 +24,6 @@ keywords = [
     "gptdiff",
 ]
 classifiers = [
-    "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",
     "Operating System :: OS Independent",
 ]