diff --git a/composer.json b/composer.json
index 1ce06f7..3bedd43 100644
--- a/composer.json
+++ b/composer.json
@@ -23,6 +23,7 @@
 		"nette/forms": "^3.0",
 		"nette/utils": "^2.3.0 || ^3.0.0",
 		"php-parallel-lint/php-parallel-lint": "^1.2",
+		"phpstan/phpstan-deprecation-rules": "^2.0",
 		"phpstan/phpstan-phpunit": "^2.0",
 		"phpstan/phpstan-strict-rules": "^2.0",
 		"phpunit/phpunit": "^9.6"
diff --git a/phpstan.neon b/phpstan.neon
index fb4e227..c69233c 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -4,6 +4,7 @@ includes:
 	- vendor/phpstan/phpstan-phpunit/extension.neon
 	- vendor/phpstan/phpstan-phpunit/rules.neon
 	- vendor/phpstan/phpstan-strict-rules/rules.neon
+	- vendor/phpstan/phpstan-deprecation-rules/rules.neon
 	- vendor/phpstan/phpstan/conf/bleedingEdge.neon
 
 parameters:
diff --git a/src/Reflection/Nette/HtmlClassReflectionExtension.php b/src/Reflection/Nette/HtmlClassReflectionExtension.php
index eba8bac..1f6d391 100644
--- a/src/Reflection/Nette/HtmlClassReflectionExtension.php
+++ b/src/Reflection/Nette/HtmlClassReflectionExtension.php
@@ -13,7 +13,7 @@ class HtmlClassReflectionExtension implements MethodsClassReflectionExtension, P
 
 	public function hasMethod(ClassReflection $classReflection, string $methodName): bool
 	{
-		return $classReflection->getName() === 'Nette\Utils\Html' || $classReflection->isSubclassOf('Nette\Utils\Html');
+		return $classReflection->is('Nette\Utils\Html');
 	}
 
 	public function getMethod(ClassReflection $classReflection, string $methodName): MethodReflection
@@ -23,7 +23,7 @@ public function getMethod(ClassReflection $classReflection, string $methodName):
 
 	public function hasProperty(ClassReflection $classReflection, string $propertyName): bool
 	{
-		return $classReflection->getName() === 'Nette\Utils\Html' || $classReflection->isSubclassOf('Nette\Utils\Html');
+		return $classReflection->is('Nette\Utils\Html');
 	}
 
 	public function getProperty(ClassReflection $classReflection, string $propertyName): PropertyReflection