diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..07764a7
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+* text eol=lf
\ No newline at end of file
diff --git a/Classes/Controller/JnPhpcontentController.php b/Classes/Controller/JnPhpcontentController.php
index 6116eba..4a1e299 100644
--- a/Classes/Controller/JnPhpcontentController.php
+++ b/Classes/Controller/JnPhpcontentController.php
@@ -1,6 +1,9 @@
 <?php
 namespace Joppnet\JnPhpcontentelement\Controller;
 
+use Psr\Http\Message\ResponseInterface;
+use Joppnet\JnPhpcontentelement\Domain\Repository\JnPhpcontentRepository;
+
 /***
  *
  * This file is part of the "[joppnet] Page PHP Content Element" Extension for TYPO3 CMS.
@@ -8,7 +11,7 @@
  * For the full copyright and license information, please read the
  * LICENSE.txt file that was distributed with this source code.
  *
- *  (c) 2022 Oliver Schlöbe <oli@joppnet.de>, joppnet
+ *  (c) 2022-2024 Oliver Schlöbe <oli@joppnet.de>, joppnet
  *
  ***/
 
@@ -18,17 +21,16 @@
 class JnPhpcontentController extends \TYPO3\CMS\Extbase\Mvc\Controller\ActionController
 {
 	/**
-	 * @TYPO3\CMS\Extbase\Annotation\Inject
-	 * @var \Joppnet\JnPhpcontentelement\Domain\Repository\JnPhpcontentRepository
+	 * @var JnPhpcontentRepository
 	 */
 	protected $jnPhpcontentRepository;
 
 	/**
 	 * Inject the PHP content repository
 	 *
-	 * @param \Joppnet\JnPhpcontentelement\Domain\Repository\JnPhpcontentRepository $jnPhpcontentRepository
+	 * @param JnPhpcontentRepository $jnPhpcontentRepository
 	 */
-	public function injectJnPhpcontentRepository(\Joppnet\JnPhpcontentelement\Domain\Repository\JnPhpcontentRepository $jnPhpcontentRepository)
+	public function injectJnPhpcontentRepository(JnPhpcontentRepository $jnPhpcontentRepository)
 	{
 		$this->jnPhpcontentRepository = $jnPhpcontentRepository;
 	}
@@ -36,11 +38,13 @@ public function injectJnPhpcontentRepository(\Joppnet\JnPhpcontentelement\Domain
 	/**
 	 * action list
 	 *
-	 * @return void
+	 * @return ResponseInterface
 	 */
-	public function listAction()
+	public function listAction(): ResponseInterface
 	{
 		$jnPhpContents = $this->jnPhpcontentRepository->findAll();
 		$this->view->assign('jnPhpContents', $jnPhpContents);
+
+		return $this->htmlResponse();
 	}
 }
diff --git a/Classes/Domain/Model/JnPhpcontent.php b/Classes/Domain/Model/JnPhpcontent.php
index f0b6c09..39e3ef8 100644
--- a/Classes/Domain/Model/JnPhpcontent.php
+++ b/Classes/Domain/Model/JnPhpcontent.php
@@ -8,7 +8,7 @@
  * For the full copyright and license information, please read the
  * LICENSE.txt file that was distributed with this source code.
  *
- *  (c) 2022 Oliver Schlöbe <oli@joppnet.de>, joppnet
+ *  (c) 2022-2024 Oliver Schlöbe <oli@joppnet.de>, joppnet
  *
  ***/
 
@@ -22,21 +22,21 @@ class JnPhpcontent extends \TYPO3\CMS\Extbase\DomainObject\AbstractEntity
 	 *
 	 * @var string
 	 */
-	protected $name = '';
+	protected string $name = '';
 
 	/**
 	 * phpcontent
 	 *
 	 * @var string
 	 */
-	protected $phpcontent = '';
+	protected string $phpcontent = '';
 
 	/**
 	 * Returns the name
 	 *
 	 * @return string $name
 	 */
-	public function getName()
+	public function getName(): string
 	{
 		return $this->name;
 	}
@@ -47,7 +47,7 @@ public function getName()
 	 * @param string $name
 	 * @return void
 	 */
-	public function setName($name)
+	public function setName($name): void
 	{
 		$this->name = $name;
 	}
@@ -57,7 +57,7 @@ public function setName($name)
 	 *
 	 * @return string $outputString
 	 */
-	public function getPhpcontentParsed()
+	public function getPhpcontentParsed(): string
 	{
 		ob_start();
 		eval('?' . chr(62) . $this->phpcontent . chr(60) . '?php ');
@@ -71,7 +71,7 @@ public function getPhpcontentParsed()
 	 *
 	 * @return string $phpcontent
 	 */
-	public function getPhpcontent()
+	public function getPhpcontent(): string
 	{
 		return $this->getPhpcontentParsed();
 		#return $this->phpcontent;
@@ -83,7 +83,7 @@ public function getPhpcontent()
 	 * @param string $phpcontent
 	 * @return void
 	 */
-	public function setPhpcontent($phpcontent)
+	public function setPhpcontent($phpcontent): void
 	{
 		$this->phpcontent = $phpcontent;
 	}
diff --git a/Classes/Domain/Repository/JnPhpcontentRepository.php b/Classes/Domain/Repository/JnPhpcontentRepository.php
index 1bbc36e..c417313 100644
--- a/Classes/Domain/Repository/JnPhpcontentRepository.php
+++ b/Classes/Domain/Repository/JnPhpcontentRepository.php
@@ -8,7 +8,7 @@
  * For the full copyright and license information, please read the
  * LICENSE.txt file that was distributed with this source code.
  *
- *  (c) 2022 Oliver Schlöbe <oli@joppnet.de>, joppnet
+ *  (c) 2022-2024 Oliver Schlöbe <oli@joppnet.de>, joppnet
  *
  ***/
 
diff --git a/Configuration/Services.yaml b/Configuration/Services.yaml
new file mode 100644
index 0000000..ff9360a
--- /dev/null
+++ b/Configuration/Services.yaml
@@ -0,0 +1,9 @@
+services:
+  _defaults:
+    autowire: true
+    autoconfigure: true
+    public: false
+
+  Joppnet\JnPhpcontentelement\:
+    resource: '../Classes/*'
+    exclude: '../Classes/Domain/Model/*'
diff --git a/Configuration/TCA/Overrides/tt_content.php b/Configuration/TCA/Overrides/tt_content.php
index 9ab6b27..bb02dcf 100644
--- a/Configuration/TCA/Overrides/tt_content.php
+++ b/Configuration/TCA/Overrides/tt_content.php
@@ -1,6 +1,12 @@
 <?php
-\TYPO3\CMS\Extbase\Utility\ExtensionUtility::registerPlugin(
-    'Joppnet.JnPhpcontentelement',
-    'Phpcelist',
-    '[joppnet] PHP Content Element'
-);
+use TYPO3\CMS\Extbase\Utility\ExtensionUtility;
+
+defined('TYPO3') or die();
+
+(function () {
+    ExtensionUtility::registerPlugin(
+        'JnPhpcontentelement',
+        'Phpcelist',
+        '[joppnet] PHP Content Element'
+    );
+})();
diff --git a/README.md b/README.md
index f0cd7d4..0ef80a1 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 [![Latest Stable Version](https://poser.pugx.org/joppnet/jn_phpcontentelement/v/stable.svg)](https://extensions.typo3.org/extension/jn_phpcontentelement/)
+[![TYPO3 12](https://img.shields.io/badge/TYPO3-12-orange.svg)](https://get.typo3.org/version/12)
 [![TYPO3 11](https://img.shields.io/badge/TYPO3-11-orange.svg)](https://get.typo3.org/version/11)
 [![TYPO3 10](https://img.shields.io/badge/TYPO3-10-orange.svg)](https://get.typo3.org/version/10)
 [![Total Downloads](https://poser.pugx.org/joppnet/jn_phpcontentelement/d/total.svg)](https://packagist.org/packages/joppnet/jn_phpcontentelement)
diff --git a/ext_localconf.php b/ext_localconf.php
index 148ceaf..b48127f 100644
--- a/ext_localconf.php
+++ b/ext_localconf.php
@@ -38,14 +38,12 @@
 	}'
 	);
 
-	// if (TYPO3_MODE === 'BE') {
-	// 	$iconRegistry = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Imaging\IconRegistry::class);
-	// 	if (!$iconRegistry->isRegistered($iconIdentifier)) {
-	// 		$iconRegistry->registerIcon(
-	// 			$iconIdentifier,
-	// 			\TYPO3\CMS\Core\Imaging\IconProvider\BitmapIconProvider::class,
-	// 			['source' => 'EXT:jn_phpcontentelement/Resources/Public/Icons/Extension.png']
-	// 		);
-	// 	}
-	// }
+	$iconRegistry = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\Imaging\IconRegistry::class);
+	if (!$iconRegistry->isRegistered($iconIdentifier)) {
+		$iconRegistry->registerIcon(
+			$iconIdentifier,
+			\TYPO3\CMS\Core\Imaging\IconProvider\BitmapIconProvider::class,
+			['source' => 'EXT:jn_phpcontentelement/Resources/Public/Icons/Extension.png']
+		);
+	}
 })();
diff --git a/jn_phpcontentelement_1.3.0.zip b/jn_phpcontentelement_1.3.0.zip
new file mode 100644
index 0000000..11df684
Binary files /dev/null and b/jn_phpcontentelement_1.3.0.zip differ