diff --git a/composer.json b/composer.json
index 2f5b7879..ae72ea4b 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
 	"name": "mediawiki/syntax-highlight",
 	"description": "Syntax highlighting extension for MediaWiki",
 	"require-dev": {
-		"mediawiki/mediawiki-codesniffer": "37.0.0",
+		"mediawiki/mediawiki-codesniffer": "38.0.0",
 		"mediawiki/mediawiki-phan-config": "0.11.0",
 		"mediawiki/minus-x": "1.1.1",
 		"php-parallel-lint/php-console-highlighter": "0.5.0",