diff --git a/Classes/Renderer/Helper/BlockHelper.php b/Classes/Renderer/Helper/BlockHelper.php
index 09655919..b3a56798 100644
--- a/Classes/Renderer/Helper/BlockHelper.php
+++ b/Classes/Renderer/Helper/BlockHelper.php
@@ -23,6 +23,7 @@
 
 namespace Fr\Typo3Handlebars\Renderer\Helper;
 
+use Fr\Typo3Handlebars\Attribute;
 use Fr\Typo3Handlebars\Exception;
 use Fr\Typo3Handlebars\Renderer;
 
@@ -33,12 +34,13 @@
  * @license GPL-2.0-or-later
  * @see https://github.com/shannonmoeller/handlebars-layouts#block-name
  */
-class BlockHelper implements HelperInterface
+final readonly class BlockHelper implements HelperInterface
 {
     /**
      * @param array<string, mixed> $options
      * @throws Exception\UnsupportedTypeException
      */
+    #[Attribute\AsHelper('block')]
     public function evaluate(string $name, array $options): string
     {
         $data = $options['_this'];
diff --git a/Classes/Renderer/Helper/ContentHelper.php b/Classes/Renderer/Helper/ContentHelper.php
index 9aef4a8e..971bea46 100644
--- a/Classes/Renderer/Helper/ContentHelper.php
+++ b/Classes/Renderer/Helper/ContentHelper.php
@@ -23,6 +23,7 @@
 
 namespace Fr\Typo3Handlebars\Renderer\Helper;
 
+use Fr\Typo3Handlebars\Attribute;
 use Fr\Typo3Handlebars\Renderer;
 use Psr\Log;
 
@@ -33,16 +34,17 @@
  * @license GPL-2.0-or-later
  * @see https://github.com/shannonmoeller/handlebars-layouts#content-name-modeappendprependreplace
  */
-class ContentHelper implements HelperInterface
+final readonly class ContentHelper implements HelperInterface
 {
     public function __construct(
-        protected readonly Log\LoggerInterface $logger,
+        private Log\LoggerInterface $logger,
     ) {}
 
     /**
      * @param array<string, mixed> $options
      * @return string|bool
      */
+    #[Attribute\AsHelper('content')]
     public function evaluate(string $name, array $options)
     {
         $data = $options['_this'];
diff --git a/Classes/Renderer/Helper/ExtendHelper.php b/Classes/Renderer/Helper/ExtendHelper.php
index 5d869885..0b9de3e0 100644
--- a/Classes/Renderer/Helper/ExtendHelper.php
+++ b/Classes/Renderer/Helper/ExtendHelper.php
@@ -23,6 +23,7 @@
 
 namespace Fr\Typo3Handlebars\Renderer\Helper;
 
+use Fr\Typo3Handlebars\Attribute;
 use Fr\Typo3Handlebars\Renderer;
 
 /**
@@ -32,12 +33,13 @@
  * @license GPL-2.0-or-later
  * @see https://github.com/shannonmoeller/handlebars-layouts#extend-partial-context-keyvalue-
  */
-class ExtendHelper implements HelperInterface
+final readonly class ExtendHelper implements HelperInterface
 {
     public function __construct(
-        protected readonly Renderer\RendererInterface $renderer,
+        private Renderer\RendererInterface $renderer,
     ) {}
 
+    #[Attribute\AsHelper('extend')]
     public function evaluate(string $name): string
     {
         // Get helper options
diff --git a/Classes/Renderer/Helper/RenderHelper.php b/Classes/Renderer/Helper/RenderHelper.php
index 1ebfccd4..d4d5c164 100644
--- a/Classes/Renderer/Helper/RenderHelper.php
+++ b/Classes/Renderer/Helper/RenderHelper.php
@@ -23,6 +23,7 @@
 
 namespace Fr\Typo3Handlebars\Renderer\Helper;
 
+use Fr\Typo3Handlebars\Attribute;
 use Fr\Typo3Handlebars\DataProcessing;
 use Fr\Typo3Handlebars\Exception;
 use Fr\Typo3Handlebars\Renderer;
@@ -37,17 +38,18 @@
  * @license GPL-2.0-or-later
  * @see https://github.com/frctl/fractal/blob/main/packages/handlebars/src/helpers/render.js
  */
-class RenderHelper implements HelperInterface
+final readonly class RenderHelper implements HelperInterface
 {
     public function __construct(
-        protected readonly Renderer\RendererInterface $renderer,
-        protected readonly Core\TypoScript\TypoScriptService $typoScriptService,
-        protected readonly Frontend\ContentObject\ContentObjectRenderer $contentObjectRenderer,
+        private Renderer\RendererInterface $renderer,
+        private Core\TypoScript\TypoScriptService $typoScriptService,
+        private Frontend\ContentObject\ContentObjectRenderer $contentObjectRenderer,
     ) {}
 
     /**
      * @throws Exception\InvalidConfigurationException
      */
+    #[Attribute\AsHelper('render')]
     public function evaluate(string $name): SafeString
     {
         // Get helper options
diff --git a/Classes/Renderer/Helper/VarDumpHelper.php b/Classes/Renderer/Helper/VarDumpHelper.php
index 44011c77..abd60f41 100644
--- a/Classes/Renderer/Helper/VarDumpHelper.php
+++ b/Classes/Renderer/Helper/VarDumpHelper.php
@@ -23,8 +23,8 @@
 
 namespace Fr\Typo3Handlebars\Renderer\Helper;
 
-use Fr\Typo3Handlebars\Attribute\AsHelper;
-use TYPO3\CMS\Core\Utility\DebugUtility;
+use Fr\Typo3Handlebars\Attribute;
+use TYPO3\CMS\Core;
 
 /**
  * VarDumpHelper
@@ -32,17 +32,17 @@
  * @author Elias Häußler <e.haeussler@familie-redlich.de>
  * @license GPL-2.0-or-later
  */
-class VarDumpHelper implements HelperInterface
+final readonly class VarDumpHelper implements HelperInterface
 {
     /**
      * @param array<string|int, mixed> $context
      */
-    #[AsHelper('varDump')]
+    #[Attribute\AsHelper('varDump')]
     public static function evaluate(array $context): string
     {
         \ob_start();
 
-        DebugUtility::debug($context['_this']);
+        Core\Utility\DebugUtility::debug($context['_this']);
 
         return (string)\ob_get_clean();
     }