diff --git a/composer.json b/composer.json
index 949f84d923..5738f129e9 100644
--- a/composer.json
+++ b/composer.json
@@ -36,7 +36,8 @@
         "monolog/monolog": "^2.9",
         "phpstan/phpstan": "^1.11",
         "phpstan/phpstan-phpunit": "^1.4",
-        "phpunit/phpunit": "^9.6"
+        "phpunit/phpunit": "^9.6",
+        "rector/rector": "^1.2"
     },
     "suggest" : {
         "ext-curl" : "*",
diff --git a/tests/Sabre/DAVACL/Xml/Property/ACLTest.php b/tests/Sabre/DAVACL/Xml/Property/ACLTest.php
index 6cc2ca422a..80a094aa72 100644
--- a/tests/Sabre/DAVACL/Xml/Property/ACLTest.php
+++ b/tests/Sabre/DAVACL/Xml/Property/ACLTest.php
@@ -12,7 +12,7 @@ class ACLTest extends \PHPUnit\Framework\TestCase
     public function testConstruct()
     {
         $acl = new Acl([]);
-        self::assertInstanceOf(\Sabre\DAVACL\Xml\Property\ACL::class, $acl);
+        self::assertInstanceOf(\Sabre\DAVACL\Xml\Property\Acl::class, $acl);
     }
 
     public function testSerializeEmpty()