diff --git a/composer.json b/composer.json
index 2eba877..16896dd 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,7 @@
 		]
 	},
 	"require-dev": {
-		"mediawiki/mediawiki-codesniffer": "31.0.0",
+		"mediawiki/mediawiki-codesniffer": "33.0.0",
 		"mediawiki/minus-x": "1.1.0",
 		"ockcyp/covers-validator": "1.2.0",
 		"php-parallel-lint/php-console-highlighter": "0.5.0",