diff --git a/composer.json b/composer.json
index c6777f2..044edbb 100644
--- a/composer.json
+++ b/composer.json
@@ -1,10 +1,10 @@
 {
 	"require-dev": {
-		"mediawiki/mediawiki-codesniffer": "35.0.0",
+		"mediawiki/mediawiki-codesniffer": "36.0.0",
 		"mediawiki/mediawiki-phan-config": "0.10.6",
 		"mediawiki/minus-x": "1.1.1",
 		"php-parallel-lint/php-console-highlighter": "0.5.0",
-		"php-parallel-lint/php-parallel-lint": "1.2.0"
+		"php-parallel-lint/php-parallel-lint": "1.3.0"
 	},
 	"scripts": {
 		"fix": [
diff --git a/includes/TimelessTemplate.php b/includes/TimelessTemplate.php
index b77f435..63d67c5 100644
--- a/includes/TimelessTemplate.php
+++ b/includes/TimelessTemplate.php
@@ -1039,7 +1039,7 @@ class TimelessTemplate extends BaseTemplate {
 	protected function getCatList( $list, $id, $class, $message ) {
 		$html = Html::openElement( 'div', [ 'id' => "sidebar-{$id}", 'class' => $class ] );
 
-		$makeLinkItem = function ( $linkHtml ) {
+		$makeLinkItem = static function ( $linkHtml ) {
 			return Html::rawElement( 'li', [], $linkHtml );
 		};