diff --git a/composer.json b/composer.json
index 5a30f30c9..5f5af96ee 100644
--- a/composer.json
+++ b/composer.json
@@ -36,13 +36,18 @@
 	"require-dev": {
 		"jakub-onderka/php-parallel-lint": "0.9.2",
 		"mediawiki/mediawiki-codesniffer": "14.1.0",
-		"jakub-onderka/php-console-highlighter": "0.3.2"
+		"jakub-onderka/php-console-highlighter": "0.3.2",
+		"mediawiki/minus-x": "0.2.1"
 	},
 	"scripts": {
-		"fix": "phpcbf",
+		"fix": [
+			"phpcbf",
+			"minus-x fix ."
+		],
 		"test": [
 			"parallel-lint . --exclude node_modules --exclude vendor",
-			"phpcs -p -s"
+			"phpcs -p -s",
+			"minus-x check ."
 		]
 	}
 }