diff --git a/.phpcs.xml b/.phpcs.xml
index 28d3cbae..a35218c6 100644
--- a/.phpcs.xml
+++ b/.phpcs.xml
@@ -4,6 +4,7 @@
 		<exclude name="MediaWiki.Commenting.FunctionComment.MissingDocumentationPrivate" />
 		<exclude name="MediaWiki.Files.ClassMatchesFilename.NotMatch" />
 		<exclude name="MediaWiki.Commenting.FunctionComment.MissingDocumentationPublic" />
+		<exclude name="MediaWiki.Commenting.PropertyDocumentation.MissingDocumentationProtected" />
 	</rule>
 	<file>.</file>
 	<arg name="extensions" value="php" />
diff --git a/composer.json b/composer.json
index 8780e444..7b5dec22 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
 		"mediawiki/cldr": "Language names in all languages"
 	},
 	"require-dev": {
-		"mediawiki/mediawiki-codesniffer": "31.0.0",
+		"mediawiki/mediawiki-codesniffer": "33.0.0",
 		"mediawiki/mediawiki-phan-config": "0.10.3",
 		"mediawiki/minus-x": "1.1.0",
 		"php-parallel-lint/php-console-highlighter": "0.5.0",