diff --git a/mkdocs_rss_plugin/config.py b/mkdocs_rss_plugin/config.py
new file mode 100644
index 00000000..f4b57f1e
--- /dev/null
+++ b/mkdocs_rss_plugin/config.py
@@ -0,0 +1,33 @@
+#! python3  # noqa: E265
+
+# ############################################################################
+# ########## Libraries #############
+# ##################################
+
+
+# 3rd party
+from mkdocs.config import config_options
+from mkdocs.config.base import Config
+
+
+# ############################################################################
+# ########## Classes ###############
+# ##################################
+class RssPluginConfig(Config):
+    """Configuration for RSS plugin for Mkdocs."""
+
+    abstract_chars_count = config_options.Type(int, default=160)
+    abstract_delimiter = config_options.Type(str, default="<!-- more -->")
+    categories = config_options.Optional(
+        config_options.ListOfItems(config_options.Type(str))
+    )
+    comments_path = config_options.Optional(config_options.Type(str))
+    date_from_meta = config_options.Optional(config_options.Type(dict))
+    enabled = config_options.Type(bool, default=True)
+    feed_ttl = config_options.Type(int, default=1440)
+    image = config_options.Optional(config_options.Type(str))
+    length = config_options.Type(int, default=20)
+    match_path = config_options.Type(str, default=".*")
+    pretty_print = config_options.Type(bool, default=False)
+    url_parameters = config_options.Optional(config_options.Type(dict))
+    use_git = config_options.Type(bool, default=True)
diff --git a/mkdocs_rss_plugin/plugin.py b/mkdocs_rss_plugin/plugin.py
index d78c0314..3a121e1b 100644
--- a/mkdocs_rss_plugin/plugin.py
+++ b/mkdocs_rss_plugin/plugin.py
@@ -21,9 +21,10 @@
 from mkdocs.utils import get_build_timestamp
 
 # package modules
-from .__about__ import __title__, __uri__, __version__
-from .customtypes import PageInformation
-from .util import Util
+from mkdocs_rss_plugin.__about__ import __title__, __uri__, __version__
+from mkdocs_rss_plugin.config import RssPluginConfig
+from mkdocs_rss_plugin.customtypes import PageInformation
+from mkdocs_rss_plugin.util import Util
 
 # ############################################################################
 # ########## Globals #############
@@ -42,25 +43,9 @@
 # ##################################
 
 
-class GitRssPlugin(BasePlugin):
+class GitRssPlugin(BasePlugin[RssPluginConfig]):
     """Main class for MkDocs plugin."""
 
-    config_scheme = (
-        ("abstract_chars_count", config_options.Type(int, default=160)),
-        ("abstract_delimiter", config_options.Type(str, default="<!-- more -->")),
-        ("categories", config_options.Type(list, default=None)),
-        ("comments_path", config_options.Type(str, default=None)),
-        ("date_from_meta", config_options.Type(dict, default=None)),
-        ("enabled", config_options.Type(bool, default=True)),
-        ("feed_ttl", config_options.Type(int, default=1440)),
-        ("image", config_options.Type(str, default=None)),
-        ("length", config_options.Type(int, default=20)),
-        ("match_path", config_options.Type(str, default=".*")),
-        ("pretty_print", config_options.Type(bool, default=False)),
-        ("url_parameters", config_options.Type(dict, default=None)),
-        ("use_git", config_options.Type(bool, default=True)),
-    )
-
     def __init__(self):
         """Instanciation."""
         # dates source
@@ -104,23 +89,23 @@ def on_config(self, config: config_options.Config) -> dict:
 
         # start a feed dictionary using global config vars
         base_feed = {
-            "author": config.get("site_author", None),
+            "author": config.site_author or None,
             "buildDate": formatdate(get_build_timestamp()),
-            "copyright": config.get("copyright", None),
-            "description": config.get("site_description", None),
+            "copyright": config.copyright,
+            "description": config.site_description,
             "entries": [],
             "generator": f"{__title__} - v{__version__}",
             "html_url": self.util.get_site_url(config),
             "language": self.util.guess_locale(config),
             "pubDate": formatdate(get_build_timestamp()),
-            "repo_url": config.get("repo_url", config.get("site_url", None)),
+            "repo_url": config.repo_url,
             "title": config.get("site_name", None),
-            "ttl": self.config.get("feed_ttl", None),
+            "ttl": self.config.feed_ttl,
         }
 
         # feed image
-        if self.config.get("image"):
-            base_feed["logo_url"] = self.config.get("image")
+        if self.config.image:
+            base_feed["logo_url"] = self.config.image
 
         # pattern to match pages included in output
         self.match_path_pattern = compile(self.config.get("match_path"))
diff --git a/requirements/base.txt b/requirements/base.txt
index 74bc079b..4bdc69fb 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -3,6 +3,6 @@
 
 
 GitPython>=3.1,<3.2
-mkdocs>=1.1,<2
+mkdocs>=1.4,<2
 pytz==2022.* ; python_version < "3.9"
 tzdata==2023.* ; python_version >= "3.9" and sys_platform == "win32"
diff --git a/tests/test_config.py b/tests/test_config.py
index 56b9874f..52ed3597 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -17,8 +17,11 @@
 import unittest
 from pathlib import Path
 
+# 3rd party
 from mkdocs.config.base import Config
 
+from mkdocs_rss_plugin.config import RssPluginConfig
+
 # plugin target
 from mkdocs_rss_plugin.plugin import GitRssPlugin
 
@@ -65,8 +68,8 @@ def test_plugin_config_defaults(self):
             "feed_ttl": 1440,
             "image": None,
             "length": 20,
-            "pretty_print": False,
             "match_path": ".*",
+            "pretty_print": False,
             "url_parameters": None,
             "use_git": True,
         }
@@ -74,6 +77,8 @@ def test_plugin_config_defaults(self):
         # load
         plugin = GitRssPlugin()
         errors, warnings = plugin.load_config({})
+        self.assertIsInstance(plugin.config, RssPluginConfig)
+        self.assertIsInstance(plugin.config, Config)
         self.assertEqual(plugin.config, expected)
         self.assertEqual(errors, [])
         self.assertEqual(warnings, [])
@@ -90,8 +95,8 @@ def test_plugin_config_image(self):
             "feed_ttl": 1440,
             "image": self.feed_image,
             "length": 20,
-            "pretty_print": False,
             "match_path": ".*",
+            "pretty_print": False,
             "url_parameters": None,
             "use_git": True,
         }
@@ -102,6 +107,8 @@ def test_plugin_config_image(self):
         # load
         plugin = GitRssPlugin()
         errors, warnings = plugin.load_config(custom_cfg)
+        self.assertIsInstance(plugin.config, RssPluginConfig)
+        self.assertIsInstance(plugin.config, Config)
         self.assertEqual(plugin.config, expected)
         self.assertEqual(errors, [])
         self.assertEqual(warnings, [])