diff --git a/pyproject.toml b/pyproject.toml
index b3ff3d2..1059969 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools>=68.0", "wheel"]
+requires = ["setuptools>=77.0", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -15,7 +15,6 @@ authors = [
 classifiers = [
     "Development Status :: 4 - Beta",
     "Intended Audience :: System Administrators",
-    "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.12",
diff --git a/tests/test_pyproject_metadata.py b/tests/test_pyproject_metadata.py
new file mode 100644
index 0000000..8d9e3ef
--- /dev/null
+++ b/tests/test_pyproject_metadata.py
@@ -0,0 +1,14 @@
+"""Packaging metadata: SPDX license expression, no superseded classifier."""
+
+from __future__ import annotations
+
+import pathlib
+
+ROOT = pathlib.Path(__file__).resolve().parent.parent
+PYPROJECT = (ROOT / "pyproject.toml").read_text(encoding="utf-8")
+
+
+def test_pyproject_uses_spdx_license_expression_not_classifier() -> None:
+    assert 'license = "MIT"' in PYPROJECT
+    assert "License :: OSI Approved :: MIT License" not in PYPROJECT
+    assert "setuptools>=77" in PYPROJECT