diff --git a/.phpcs.xml b/.phpcs.xml
index 1dc29a912..9ebd2d093 100644
--- a/.phpcs.xml
+++ b/.phpcs.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0"?>
 <ruleset>
 	<rule ref="./vendor/mediawiki/mediawiki-codesniffer/MediaWiki">
+		<exclude name="MediaWiki.Commenting.FunctionAnnotations.UnrecognizedAnnotation" />
 		<exclude name="MediaWiki.Commenting.FunctionComment.MissingDocumentationPublic" />
 		<exclude name="MediaWiki.WhiteSpace.SpaceBeforeSingleLineComment.NewLineComment" />
 	</rule>
diff --git a/composer.json b/composer.json
index 2b81ab5b6..4f5732c77 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
 	"require-dev": {
 		"jakub-onderka/php-parallel-lint": "1.0.0",
-		"mediawiki/mediawiki-codesniffer": "20.0.0",
+		"mediawiki/mediawiki-codesniffer": "21.0.0",
 		"jakub-onderka/php-console-highlighter": "0.3.2",
 		"mediawiki/minus-x": "0.3.1",
 		"mediawiki/mediawiki-phan-config": "0.3.0"