diff --git a/fdroidserver/index.py b/fdroidserver/index.py
index 5a174d51..096ace12 100644
--- a/fdroidserver/index.py
+++ b/fdroidserver/index.py
@@ -28,6 +28,7 @@ import os
 import re
 import ruamel.yaml
 import shutil
+import sys
 import tempfile
 import urllib.parse
 import zipfile
@@ -1309,6 +1310,29 @@ def make_v0(apps, apks, repodir, repodict, requestsdict, fdroid_signing_key_fing
                         os.remove(siglinkname)
                     os.symlink(sigfile_path, siglinkname)
 
+    if sys.version_info.minor >= 13:
+        # Python 3.13 changed minidom so it no longer converts " to an XML entity.
+        # https://github.com/python/cpython/commit/154477be722ae5c4e18d22d0860e284006b09c4f
+        # This just puts back the previous implementation, with black code format.
+        import inspect
+        import xml.dom.minidom
+
+        def _write_data(writer, text, attr):  # pylint: disable=unused-argument
+            if text:
+                text = (
+                    text.replace('&', '&')
+                    .replace('<', '&lt;')
+                    .replace('"', '&quot;')
+                    .replace('>', '&gt;')
+                )
+            writer.write(text)
+
+        argnames = tuple(inspect.signature(xml.dom.minidom._write_data).parameters)
+        if argnames == ('writer', 'text', 'attr'):
+            xml.dom.minidom._write_data = _write_data
+        else:
+            logging.warning('Failed to monkey patch minidom for index.xml support!')
+
     if common.options.pretty:
         output = doc.toprettyxml(encoding='utf-8')
     else:
diff --git a/setup.py b/setup.py
index 0631fd6e..422a5962 100755
--- a/setup.py
+++ b/setup.py
@@ -116,8 +116,13 @@ setup(
     # Some requires are only needed for very limited cases:
     # * biplist is only used for parsing Apple .ipa files
     # * pycountry is only for linting config/mirrors.yml
+    # * python-magic is preferred when libmagic is available, but its not in pypi.org
     extras_require={
-        'optional': ['biplist', 'pycountry'],
+        'optional': [
+            'biplist',
+            'pycountry',
+            'python-magic',
+        ],
         'test': ['pyjks', 'html5print'],
         'docs': [
             'sphinx',
@@ -127,7 +132,7 @@ setup(
         ],
     },
     classifiers=[
-        'Development Status :: 4 - Beta',
+        'Development Status :: 5 - Production/Stable',
         'Intended Audience :: Developers',
         'Intended Audience :: Information Technology',
         'Intended Audience :: System Administrators',
@@ -136,6 +141,13 @@ setup(
         'Operating System :: POSIX',
         'Operating System :: MacOS :: MacOS X',
         'Operating System :: Unix',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.9',
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
+        'Programming Language :: Python :: 3 :: Only',
         'Topic :: Utilities',
     ],
 )
diff --git a/tests/test_common.py b/tests/test_common.py
index 5ad5a771..4ae55c73 100755
--- a/tests/test_common.py
+++ b/tests/test_common.py
@@ -2394,11 +2394,9 @@ class CommonTest(unittest.TestCase):
     def test_auto_install_ndk_mock_dl(self):
         """Test NDK installs by actually calling sdkmanager"""
         import sdkmanager
-        import pkg_resources
+        import importlib.metadata
 
-        sdkmanager_version = LooseVersion(
-            pkg_resources.get_distribution('sdkmanager').version
-        )
+        sdkmanager_version = LooseVersion(importlib.metadata.version('sdkmanager'))
         if sdkmanager_version < LooseVersion('0.6.4'):
             raise unittest.SkipTest('needs fdroid sdkmanager >= 0.6.4')