--- pyproject.toml.orig	2026-08-27 20:11:54 UTC
+++ pyproject.toml
@@ -1,6 +1,6 @@ requires = [
 [build-system]
 requires = [
-  "setuptools >= 65.0.0",
+  "setuptools >= 63.0.0",
 ]
 build-backend = "setuptools.build_meta"
 
@@ -9,7 +9,7 @@ requires-python = ">=3.12"
 description = "A GTK XMPP Client"
 readme = "README.md"
 requires-python = ">=3.12"
-license = "GPL-3.0-or-later"
+license = {text = "GPL-3.0-or-later"}
 authors = [
   {name = "Philipp Hörist", email = "philipp@hoerist.com"},
   {name = "Yann Leboulanger", email = "yann@leboulanger.org"},
@@ -18,6 +18,7 @@ classifiers = [
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Environment :: X11 Applications :: GTK",
+  "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
   "Operating System :: OS Independent",
   "Programming Language :: Python :: 3.12",
   "Topic :: Communications :: Chat",