diff --git a/Classes/Controller/ActionController.php b/Classes/Controller/ActionController.php
index cffa6ea..02797b6 100644
--- a/Classes/Controller/ActionController.php
+++ b/Classes/Controller/ActionController.php
@@ -182,7 +182,7 @@ class ActionController extends BaseController
      */
     public function injectPropertyMapper(
         PropertyMapper $propertyMapper
-    ) {
+    ): void {
         $this->propertyMapper = $propertyMapper;
     }
 
diff --git a/Classes/Traits/DependencyInjectionTrait.php b/Classes/Traits/DependencyInjectionTrait.php
index 039f1c3..e5cd10c 100644
--- a/Classes/Traits/DependencyInjectionTrait.php
+++ b/Classes/Traits/DependencyInjectionTrait.php
@@ -102,11 +102,17 @@ trait DependencyInjectionTrait
                 $frameworkConfiguration['persistence']['storagePid']
             )
         );
-        $this->reflectionService = GeneralUtility::makeInstance(
-            ReflectionService::class, GeneralUtility::makeInstance(
-                CacheManager::class
-            )
-        );
+        if (version_compare(TYPO3_branch, '10.0', '>=')) {
+            $this->reflectionService = GeneralUtility::makeInstance(
+                ReflectionService::class
+            );
+        } else {
+            $this->reflectionService = GeneralUtility::makeInstance(
+                ReflectionService::class, GeneralUtility::makeInstance(
+                    CacheManager::class
+                )
+            );
+        }
         $classInfo = $this->reflectionService->getClassSchema(
             get_class($this)
         );
diff --git a/Classes/ViewHelpers/TranslationViewHelper.php b/Classes/ViewHelpers/TranslationViewHelper.php
index 03aa02c..dd34c4c 100644
--- a/Classes/ViewHelpers/TranslationViewHelper.php
+++ b/Classes/ViewHelpers/TranslationViewHelper.php
@@ -66,7 +66,7 @@ class TranslationViewHelper extends AbstractViewHelper
         $translation = LocalizationUtility::translate(
             $arguments['key'],
             $arguments['extensionKey'],
-            $arguments['arguments']
+            (array) $arguments['arguments']
         );
         if ($translation) {
             return $translation;
diff --git a/Resources/Private/UserTSConfig/default.ts b/Resources/Private/UserTSConfig/default.ts
index c117da8..aca9b42 100644
--- a/Resources/Private/UserTSConfig/default.ts
+++ b/Resources/Private/UserTSConfig/default.ts
@@ -1,6 +1,3 @@
-#options.pageTree.showPageIdWithTitle = 1
-options.pageTree.showNavTitle = 1
-
 options {
     folderTree {
         uploadFieldsInLinkBrowser = 0
diff --git a/composer.json b/composer.json
index 0134a05..7eb349a 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,7 @@
         }
     ],
     "require": {
-        "typo3/cms-core": "8.7.0 - 10.99.99",
+        "typo3/cms-core": "8.7.0 - 11.99.99",
         "sarhan/php-flatten": "^4.0"
     },
     "autoload": {
diff --git a/ext_tables.php b/ext_tables.php
index 48b4841..ea14cb8 100644
--- a/ext_tables.php
+++ b/ext_tables.php
@@ -39,14 +39,25 @@ call_user_func(
         $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['cms']['db_new_content_el']['wizardItemsHook'][] =
             \Cjel\TemplatesAide\Hooks\WizardItems::class;
 
-        if(\TYPO3\CMS\Core\Utility\GeneralUtility::getApplicationContext()->isDevelopment()) {
-            $GLOBALS['TBE_STYLES']['skins']['backend']['stylesheetDirectories']['dev'] =
-                'EXT:templates_aide/Resources/Public/Css/backend/dev';
-        }
 
-        if(\TYPO3\CMS\Core\Utility\GeneralUtility::getApplicationContext()->__toString() === 'Production/Stage') {
-            $GLOBALS['TBE_STYLES']['skins']['backend']['stylesheetDirectories']['dev'] =
-                'EXT:templates_aide/Resources/Public/Css/backend/production-stage';
+        if (version_compare(TYPO3_branch, '10.0', '>=')) {
+            if (\TYPO3\CMS\Core\Core\Environment::getContext()->isDevelopment()) {
+                $GLOBALS['TBE_STYLES']['skins']['backend']['stylesheetDirectories']['dev'] =
+                    'EXT:templates_aide/Resources/Public/Css/backend/dev';
+            }
+            if(\TYPO3\CMS\Core\Core\Environment::getContext()->__toString() === 'Production/Stage') {
+                $GLOBALS['TBE_STYLES']['skins']['backend']['stylesheetDirectories']['dev'] =
+                    'EXT:templates_aide/Resources/Public/Css/backend/production-stage';
+            }
+        } else {
+            if (\TYPO3\CMS\Core\Utility\GeneralUtility::getApplicationContext()->isDevelopment()) {
+                $GLOBALS['TBE_STYLES']['skins']['backend']['stylesheetDirectories']['dev'] =
+                    'EXT:templates_aide/Resources/Public/Css/backend/dev';
+            }
+            if(\TYPO3\CMS\Core\Utility\GeneralUtility::getApplicationContext()->__toString() === 'Production/Stage') {
+                $GLOBALS['TBE_STYLES']['skins']['backend']['stylesheetDirectories']['dev'] =
+                    'EXT:templates_aide/Resources/Public/Css/backend/production-stage';
+            }
         }
 
         $GLOBALS['TBE_STYLES']['skins']['backend']['stylesheetDirectories']['templates_aide_default'] =
@@ -83,4 +94,4 @@ $GLOBALS['TYPO3_USER_SETTINGS']['showitem'] = str_replace(
     'recursiveDelete',
     'recursiveDelete,disableDragModal',
     $GLOBALS['TYPO3_USER_SETTINGS']['showitem'],
-);
\ No newline at end of file
+);