diff --git a/.phpcs.xml b/.phpcs.xml
index 953883a..b897531 100644
--- a/.phpcs.xml
+++ b/.phpcs.xml
@@ -1,11 +1,11 @@
 <?xml version="1.0"?>
 <ruleset>
 	<rule ref="./vendor/mediawiki/mediawiki-codesniffer/MediaWiki">
+		<exclude name="Generic.Files.OneObjectStructurePerFile.MultipleFound" />
 		<exclude name="MediaWiki.NamingConventions.LowerCamelFunctionsName.FunctionName"/>
 		<exclude name="MediaWiki.WhiteSpace.SpaceBeforeSingleLineComment.NewLineComment"/>
 		<exclude name="MediaWiki.Commenting.FunctionComment.MissingParamComment"/>
 		<exclude name="MediaWiki.Files.ClassMatchesFilename.NotMatch" />
-		<exclude name="MediaWiki.Files.OneClassPerFile.MultipleFound" />
 	</rule>
 	<file>.</file>
 	<arg name="extensions" value="php,php5,inc"/>
diff --git a/composer.json b/composer.json
index 0d46d2f..35cfa63 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
 	"require-dev": {
 		"jakub-onderka/php-parallel-lint": "0.9.2",
-		"mediawiki/mediawiki-codesniffer": "14.1.0",
+		"mediawiki/mediawiki-codesniffer": "15.0.0",
 		"jakub-onderka/php-console-highlighter": "0.3.2",
 		"mediawiki/minus-x": "0.2.1"
 	},