diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6e586fc..18c137c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        TYPO3: ['12', '13']
+        TYPO3: ['12', '13', '14']
 
     steps:
       - name: Checkout
@@ -27,15 +27,20 @@ jobs:
         run: composer validate
 
       - name: Cache dependencies
-        uses: actions/cache@v1
+        uses: actions/cache@v4
         with:
           path: ~/.composer/cache
           key: dependencies-composer-${{ hashFiles('composer.json') }}
 
+      - name: Install composer dependencies TYPO3 14
+        if: matrix.TYPO3 == '14'
+        run: |
+          composer install --no-progress --no-interaction
+
       - name: Install composer dependencies TYPO3 13
         if: matrix.TYPO3 == '13'
         run: |
-          composer install --no-progress --no-interaction
+          composer require typo3/cms-core:^13.4 --no-progress --no-interaction --dev -W
 
       - name: Install composer dependencies TYPO3 12
         if: matrix.TYPO3 == '12'
diff --git a/Classes/AvailablePermissionSets.php b/Classes/AvailablePermissionSets.php
index a4731db..7281c10 100644
--- a/Classes/AvailablePermissionSets.php
+++ b/Classes/AvailablePermissionSets.php
@@ -12,8 +12,6 @@
 
 namespace B13\PermissionSets;
 
-use TYPO3\CMS\Backend\Form\FormDataProvider\TcaSelectItems;
-
 /**
  * Functionality to load all available permission sets for selection of be_groups.permissions.sets
  */
@@ -21,7 +19,7 @@ class AvailablePermissionSets
 {
     public function __construct(protected PermissionSetRegistry $registry) {}
 
-    public function backendGroupSelector(array &$params, TcaSelectItems $parentObject)
+    public function backendGroupSelector(array &$params): void
     {
         foreach ($this->registry->all() as $identifier => $permissionSet) {
             $params['items'][] = ['label' => $permissionSet->label, 'value' => $identifier];
diff --git a/composer.json b/composer.json
index 827772e..d4950ff 100644
--- a/composer.json
+++ b/composer.json
@@ -5,7 +5,7 @@
 	"keywords": ["typo3", "permissions", "acl", "deployment"],
 	"license": "GPL-2.0-or-later",
 	"require": {
-		"typo3/cms-core": "^12.4 || ^13.4"
+		"typo3/cms-core": "^12.4 || ^13.4 || ^14.3"
 	},
 	"extra": {
 		"typo3/cms": {
@@ -21,10 +21,10 @@
 		}
 	},
 	"require-dev": {
-		"typo3/cms-dashboard": "^12.4 || ^13.4",
-		"saschaegerer/phpstan-typo3": "^1.8",
+		"typo3/cms-dashboard": "^12.4 || ^13.4 || ^14.3",
+		"saschaegerer/phpstan-typo3": "^1.8 || ^2.0",
 		"typo3/coding-standards": "^0.8.0",
-		"typo3/testing-framework": "^8.0",
+		"typo3/testing-framework": "^8.0 || ^9.0",
 		"b13/permission-sets-examples": "1.0.0"
 	},
 	"config": {
diff --git a/ext_emconf.php b/ext_emconf.php
index f55f373..a319bb1 100644
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -12,7 +12,7 @@
     'version' => '1.0.0',
     'constraints' => [
         'depends' => [
-            'typo3' => '12.4.0-13.99.99',
+            'typo3' => '12.4.0-14.99.99',
         ],
         'conflicts' => [],
         'suggests' => [],