--- pyproject.toml.orig	2025-05-21 16:47:38 UTC
+++ pyproject.toml
@@ -3,7 +3,7 @@ requires-python = '>=3.9'
 description = 'The ASDF Standard schemas'
 readme = 'README.md'
 requires-python = '>=3.9'
-license-files = ['LICENSE']
+license = { file = 'LICENSE' }
 authors = [{ name = 'The ASDF Developers', email = 'help@stsci.edu' }]
 classifiers = [
     'Programming Language :: Python',
@@ -41,7 +41,7 @@ requires = [
 
 [build-system]
 requires = [
-    "setuptools >=77",
+    "setuptools >=61",
     "setuptools_scm[toml] >=3.4",
     "wheel",
 ]