diff --git a/Classes/Controller/DocModuleController.php b/Classes/Controller/DocModuleController.php
index 095c244..bb7846d 100644
--- a/Classes/Controller/DocModuleController.php
+++ b/Classes/Controller/DocModuleController.php
@@ -8,11 +8,7 @@
 use TYPO3\CMS\Backend\Routing\UriBuilder;
 use TYPO3\CMS\Core\Configuration\ExtensionConfiguration;
 use TYPO3\CMS\Core\Http\HtmlResponse;
-use TYPO3\CMS\Core\Information\Typo3Version;
-use TYPO3\CMS\Core\Page\JavaScriptModuleInstruction;
-use TYPO3\CMS\Core\Page\PageRenderer;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
-use TYPO3\CMS\Core\Utility\PathUtility;
 use TYPO3\CMS\Extbase\Mvc\Controller\ControllerInterface;
 use TYPO3\CMS\Extbase\Mvc\RequestInterface;
 use TYPO3\CMS\Fluid\View\StandaloneView;
@@ -59,7 +55,7 @@ private function getStandaloneView(): StandaloneView
         $view = GeneralUtility::makeInstance(StandaloneView::class);
         $view->setTemplatePathAndFilename($templatePathAndFilename);
         $view->assignMultiple([
-            'docRootPath' => $uri,
+            'docRootPath' => $uri->__toString(),
             'documentationName' => $documentationName,
             'darkMode' => $settings['darkMode'] ?? false
         ]);
diff --git a/Classes/Controller/DocServeController.php b/Classes/Controller/DocServeController.php
index d14b762..9dc1a39 100644
--- a/Classes/Controller/DocServeController.php
+++ b/Classes/Controller/DocServeController.php
@@ -66,16 +66,22 @@ public function mainAction(ServerRequestInterface $request): ResponseInterface
     private function getFile(string $path): string
     {
         $path = PathUtility::getCanonicalPath($path);
-        if (!StringUtility::beginsWith($path, $this->extensionConfiguration['documentationRootPath'] ?? '')) {
+        if (!str_starts_with($path, $this->extensionConfiguration['documentationRootPath'] ?? '')) {
             return '';
         }
 
+
         $fileInfo = pathinfo($path);
         if (!in_array(strtolower($fileInfo['extension']), ['png', 'svg', 'gif', 'md', 'doc', 'docx', 'jpeg', 'jpg'], true)) {
             return '';
         }
 
-        $file = Environment::getPublicPath() . $path;
+        if (\str_starts_with($path, 'EXT:')) {
+            $file = GeneralUtility::getFileAbsFileName($path);
+        } else {
+            $file = Environment::getPublicPath() . $path;
+        }
+
         if (!is_file($file)) {
             return '';
         }
diff --git a/Classes/Widgets/CtaWidget.php b/Classes/Widgets/CtaWidget.php
new file mode 100644
index 0000000..1d24f4c
--- /dev/null
+++ b/Classes/Widgets/CtaWidget.php
@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace GeorgRinger\Doc\Widgets;
+
+use TYPO3\CMS\Core\Page\JavaScriptModuleInstruction;
+use TYPO3\CMS\Dashboard\Widgets\AdditionalJavaScriptInterface;
+
+class CtaWidget extends \TYPO3\CMS\Dashboard\Widgets\CtaWidget implements AdditionalJavaScriptInterface
+{
+
+    public function getJsFiles(): array
+    {
+        return [
+            'EXT:doc/Resources/Public/JavaScript/widget-cta.js',
+        ];
+    }
+}
\ No newline at end of file
diff --git a/Classes/Widgets/Provider/ExtDocButtonProvider.php b/Classes/Widgets/Provider/ExtDocButtonProvider.php
index 2cc57bc..19a30be 100644
--- a/Classes/Widgets/Provider/ExtDocButtonProvider.php
+++ b/Classes/Widgets/Provider/ExtDocButtonProvider.php
@@ -38,7 +38,7 @@ public function getTitle(): string
     public function getLink(): string
     {
         if (ExtensionManagementUtility::isLoaded('doc')) {
-            return 'javascript:top.goToModule(' . GeneralUtility::quoteJSvalue('help_doc') . ');';
+            return 'open-docs-module';
         }
 
         return '';
diff --git a/Configuration/ContentSecurityPolicies.php b/Configuration/ContentSecurityPolicies.php
new file mode 100644
index 0000000..f596939
--- /dev/null
+++ b/Configuration/ContentSecurityPolicies.php
@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\Directive;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\Mutation;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\MutationCollection;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\MutationMode;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\Scope;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\SourceScheme;
+use TYPO3\CMS\Core\Security\ContentSecurityPolicy\UriValue;
+use TYPO3\CMS\Core\Type\Map;
+
+return Map::fromEntries([
+    Scope::backend(),
+
+    new MutationCollection(
+        new Mutation(
+            MutationMode::Extend,
+            Directive::FontSrc,
+            SourceScheme::https,
+            new UriValue('https://fonts.gstatic.com/s/robotomono/')
+        ),
+        new Mutation(
+            MutationMode::Extend,
+            Directive::StyleSrc,
+            SourceScheme::https,
+            new UriValue('https://fonts.googleapis.com/css')
+        ),
+    )
+]);
\ No newline at end of file
diff --git a/Configuration/Services.php b/Configuration/Services.php
index 28c60e3..2811d8f 100644
--- a/Configuration/Services.php
+++ b/Configuration/Services.php
@@ -3,32 +3,31 @@
 
 namespace GeorgRinger\Doc;
 
+use GeorgRinger\Doc\Widgets\CtaWidget;
 use GeorgRinger\Doc\Widgets\Provider\ExtDocButtonProvider;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
 use Symfony\Component\DependencyInjection\Reference;
-use TYPO3\CMS\Core\Utility\ExtensionManagementUtility;
 use TYPO3\CMS\Dashboard\Dashboard;
-use TYPO3\CMS\Dashboard\Widgets\CtaWidget;
 
 return static function (ContainerConfigurator $configurator, ContainerBuilder $containerBuilder) {
     $services = $configurator->services();
 
     if ($containerBuilder->hasDefinition(Dashboard::class)) {
-        $services->set('dashboard.widget.gotoProjectDocumentation')
-            ->class(CtaWidget::class)
-            ->arg('$view', new Reference('dashboard.views.widget'))
-            ->arg('$buttonProvider', new Reference(ExtDocButtonProvider::class))
-            ->arg('$options', ['text' => 'LLL:EXT:doc/Resources/Private/Language/locallang.xlf:widget.text'])
-            ->tag('dashboard.widget', [
-                'identifier' => 'gotoProjectDocumentation',
-                'groupNames' => 'documentation',
-                'title' => 'LLL:EXT:doc/Resources/Private/Language/locallang.xlf:widget.title',
-                'description' => 'LLL:EXT:doc/Resources/Private/Language/locallang.xlf:widget.description',
-                'iconIdentifier' => 'content-widget-text',
-                'height' => 'small'
-            ])
-        ;
+        $services->set('dashboard.widget.gotoProjectDocumentation')->class(CtaWidget::class)
+                ->autoconfigure()
+                ->autowire()
+                ->arg('$buttonProvider', new Reference(ExtDocButtonProvider::class))
+                ->arg('$options', ['text' => 'LLL:EXT:doc/Resources/Private/Language/locallang.xlf:widget.text'])
+                ->tag('dashboard.widget', [
+                    'identifier' => 'gotoProjectDocumentation',
+                    'groupNames' => 'documentation',
+                    'title' => 'LLL:EXT:doc/Resources/Private/Language/locallang.xlf:widget.title',
+                    'description' => 'LLL:EXT:doc/Resources/Private/Language/locallang.xlf:widget.description',
+                    'iconIdentifier' => 'content-widget-text',
+                    'height' => 'small'
+                ]);
+
 
         $services->set('GeorgRinger\Doc\Widgets\Provider\ExtDocButtonProvider')
             ->arg('$title', 'LLL:EXT:doc/Resources/Private/Language/locallang.xlf:widget.buttonText')
diff --git a/Resources/Private/Templates/Module.html b/Resources/Private/Templates/Module.html
index 66b5845..2079a3b 100644
--- a/Resources/Private/Templates/Module.html
+++ b/Resources/Private/Templates/Module.html
@@ -25,8 +25,9 @@
     </head>
     <body>
     <div id="app"></div>
-    <script>
-        var docRootPath = '{docRoothPath.path}';
+
+    <script nonce="{f:security.nonce(directive: 'script-src')}">
+        var docRootPath = '{docRootPath}';
         var documentationName = '{documentationName}';
         window.$docsify = {
             name: documentationName,
@@ -37,7 +38,7 @@
             loadNavbar: false,
             subMaxLevel: 0,
             autoHeader: false
-        }
+        };
     </script>
     <script src="{f:uri.resource(path: 'EXT:doc/Resources/Public/docsify/docsify_4.11.6.js')}"></script>
     <script src="{f:uri.resource(path: 'EXT:doc/Resources/Public/docsify/prism-php.min.js')}"></script>
diff --git a/Resources/Public/JavaScript/widget-cta.js b/Resources/Public/JavaScript/widget-cta.js
new file mode 100644
index 0000000..c16e715
--- /dev/null
+++ b/Resources/Public/JavaScript/widget-cta.js
@@ -0,0 +1,11 @@
+document.addEventListener('DOMContentLoaded', function () {
+    setTimeout(() => {
+        document.querySelectorAll('.widget-cta[href="open-docs-module"]').forEach(element => {
+            element.addEventListener('click', function (event) {
+                event.preventDefault();
+                var TYPO3 = TYPO3 || top.TYPO3;
+                TYPO3.ModuleMenu.App.showModule('help_doc');
+            });
+        });
+    }, 750);
+});
\ No newline at end of file
diff --git a/composer.json b/composer.json
index eb4c236..2c4f216 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
 	"name": "georgringer/doc",
 	"type": "typo3-cms-extension",
 	"description": "Render documentation based on markdown files directly in the backend",
-	"version": "2.0.0",
+	"version": "3.0.0",
 	"keywords": [
 		"TYPO3",
 		"documentation",
@@ -19,7 +19,7 @@
 		"GPL-2.0-or-later"
 	],
 	"require": {
-		"typo3/cms-core": "^9 || ^10 || ^11 || ^12"
+		"typo3/cms-core": "^13"
 	},
 	"autoload": {
 		"psr-4": {
diff --git a/ext_emconf.php b/ext_emconf.php
index c5ccbde..490bb9f 100755
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -4,13 +4,13 @@
     'title' => 'Markdown docs for everybody',
     'description' => 'Render documentation based on markdown files directly in the backend',
     'category' => 'be',
-    'version' => '1.1.1',
+    'version' => '3.0.0',
     'state' => 'beta',
     'author' => 'Georg Ringer',
     'author_email' => 'mail@ringer.it',
     'constraints' => [
         'depends' => [
-            'typo3' => '9.5.9-11.6.99',
+            'typo3' => '13.0.0-13.4.99',
         ],
         'conflicts' => [],
         'suggests' => []
diff --git a/ext_tables.php b/ext_tables.php
deleted file mode 100644
index dc91489..0000000
--- a/ext_tables.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addModule(
-    'help',
-    'doc',
-    '',
-    '',
-    [
-        'routeTarget' => \GeorgRinger\Doc\Controller\DocModuleController::class . '::mainAction',
-        'access' => 'group,user',
-        'name' => 'help_doc',
-        'icon' => 'EXT:doc/Resources/Public/Icons/module-doc.svg',
-        'labels' => 'LLL:EXT:doc/Resources/Private/Language/locallang_mod.xlf'
-    ]
-);