diff '--color=auto' -Naur a/pyproject.toml b/pyproject.toml
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@
 ]
 description = 'A Sphinx extension for rendering math in HTML pages'
 readme = 'README.rst'
-license = {file = 'LICENSE'}
+license-files = ['LICENSE']
 keywords = [
     'sphinx',
     'latex',
@@ -19,7 +19,6 @@
     'Development Status :: 5 - Production/Stable',
     'Intended Audience :: Science/Research',
     'Intended Audience :: Developers',
-    'License :: OSI Approved :: MIT License',
     'Operating System :: OS Independent',
     'Programming Language :: Python',
     'Programming Language :: Python :: 3',
@@ -179,6 +178,7 @@
 #
 # Find all (sub-)modules of the Python package
 [tool.setuptools.packages.find]
+exclude = ["docs", "tests"]
 
 [tool.setuptools.dynamic]
 version = {attr = 'sphinxcontrib.katex.__version__'}