diff --git a/composer.json b/composer.json
index e749dc1e..484a1822 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
 	},
 	"require-dev": {
 		"jakub-onderka/php-parallel-lint": "1.0.0",
-		"mediawiki/mediawiki-codesniffer": "19.1.0",
+		"mediawiki/mediawiki-codesniffer": "24.0.0",
 		"jakub-onderka/php-console-highlighter": "0.3.2",
 		"mediawiki/minus-x": "0.3.1"
 	},
diff --git a/data/LanguageNameIndexer.php b/data/LanguageNameIndexer.php
index 1d9318fb..c9e45750 100644
--- a/data/LanguageNameIndexer.php
+++ b/data/LanguageNameIndexer.php
@@ -20,7 +20,7 @@
 
 $IP = getenv( 'MW_INSTALL_PATH' );
 if ( $IP === false ) {
-	$IP = __DIR__  . '/../../..';
+	$IP = __DIR__ . '/../../..';
 }
 require_once "$IP/maintenance/Maintenance.php";