diff --git a/.phpcs.xml b/.phpcs.xml
index 31ab3a1..eddb6dc 100644
--- a/.phpcs.xml
+++ b/.phpcs.xml
@@ -1,8 +1,6 @@
 <?xml version="1.0"?>
 <ruleset>
-	<rule ref="./vendor/mediawiki/mediawiki-codesniffer/MediaWiki">
-		<exclude name="MediaWiki.Commenting.PropertyDocumentation.MissingDocumentationPrivate" />
-	</rule>
+	<rule ref="./vendor/mediawiki/mediawiki-codesniffer/MediaWiki" />
 	<file>.</file>
 	<arg name="extensions" value="php" />
 	<arg name="encoding" value="UTF-8" />
diff --git a/extension.json b/extension.json
index 6ea4f6b..b836e6f 100644
--- a/extension.json
+++ b/extension.json
@@ -12,7 +12,7 @@
 	"type": "other",
 	"license-name": "MIT",
 	"requires": {
-		"MediaWiki": ">= 1.35.0"
+		"MediaWiki": ">= 1.41.0"
 	},
 	"MessagesDirs": {
 		"CookieWarning": [
@@ -110,7 +110,7 @@
 			"scripts": "resources/ext.CookieWarning.geolocation/cookiePolicy.js",
 			"dependencies": [
 				"ext.CookieWarning",
-				"jquery.cookie"
+				"mediawiki.cookie"
 			],
 			"targets": [
 				"mobile",
diff --git a/includes/Decisions.php b/includes/Decisions.php
index d6b15cf..64c26b1 100644
--- a/includes/Decisions.php
+++ b/includes/Decisions.php
@@ -10,19 +10,13 @@ use MWException;
 use WANObjectCache;
 
 class Decisions {
-	private $config;
-	private $geoLocation;
-	private $cache;
-	private $userOptionsLookup;
+	private Config $config;
+	private GeoLocation $geoLocation;
+	private WANObjectCache $cache;
+	private UserOptionsLookup $userOptionsLookup;
 
 	private const CACHE_KEY = 'cookieWarningIpLookupCache:';
 
-	/**
-	 * @param Config $config
-	 * @param GeoLocation $geoLocation
-	 * @param WANObjectCache $cache
-	 * @param UserOptionsLookup $userOptionsLookup
-	 */
 	public function __construct(
 		Config $config,
 		GeoLocation $geoLocation,
diff --git a/includes/HttpGeoLocation.php b/includes/HttpGeoLocation.php
index dfca26f..b75fc61 100644
--- a/includes/HttpGeoLocation.php
+++ b/includes/HttpGeoLocation.php
@@ -10,7 +10,9 @@ use Wikimedia\IPUtils;
  * Implements the GeoLocation class, which allows to locate the user based on the IP address.
  */
 class HttpGeoLocation implements GeoLocation {
+	/** @var string */
 	private $geoIPServiceURL;
+	/** @var array */
 	private $locatedIPs = [];
 
 	/** @var HttpRequestFactory */