diff --git a/Admin/Install/Navigation.php b/Admin/Install/Navigation.php
index e3e99cd..d7b09f9 100755
--- a/Admin/Install/Navigation.php
+++ b/Admin/Install/Navigation.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist\Admin\Install
  * @copyright Dennis Eichhorn
diff --git a/Admin/Installer.php b/Admin/Installer.php
index bcfb10d..ca761fa 100755
--- a/Admin/Installer.php
+++ b/Admin/Installer.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist\Admin
  * @copyright Dennis Eichhorn
diff --git a/Admin/Status.php b/Admin/Status.php
index 9d9bc44..1241a55 100755
--- a/Admin/Status.php
+++ b/Admin/Status.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist\Admin
  * @copyright Dennis Eichhorn
diff --git a/Admin/Uninstaller.php b/Admin/Uninstaller.php
index 5b2b0aa..080f6d6 100755
--- a/Admin/Uninstaller.php
+++ b/Admin/Uninstaller.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist\Admin
  * @copyright Dennis Eichhorn
diff --git a/Admin/Updater.php b/Admin/Updater.php
index 8d8bc84..470e2d9 100755
--- a/Admin/Updater.php
+++ b/Admin/Updater.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist\Admin
  * @copyright Dennis Eichhorn
diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index e683222..ab6aa2d 100755
--- a/Controller/BackendController.php
+++ b/Controller/BackendController.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist
  * @copyright Dennis Eichhorn
diff --git a/Controller/Controller.php b/Controller/Controller.php
index 05983d5..2c7ccfa 100755
--- a/Controller/Controller.php
+++ b/Controller/Controller.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist
  * @copyright Dennis Eichhorn
diff --git a/Models/PermissionState.php b/Models/PermissionState.php
index b3ab17e..6993396 100755
--- a/Models/PermissionState.php
+++ b/Models/PermissionState.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist\Models
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/Lang/Navigation.de.lang.php b/Theme/Backend/Lang/Navigation.de.lang.php
index fe9df6f..9d2e58e 100755
--- a/Theme/Backend/Lang/Navigation.de.lang.php
+++ b/Theme/Backend/Lang/Navigation.de.lang.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/Lang/Navigation.en.lang.php b/Theme/Backend/Lang/Navigation.en.lang.php
index 1f4a119..6f9be3d 100755
--- a/Theme/Backend/Lang/Navigation.en.lang.php
+++ b/Theme/Backend/Lang/Navigation.en.lang.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/Lang/api.en.lang.php b/Theme/Backend/Lang/api.en.lang.php
index 25ae3ed..99b9c03 100755
--- a/Theme/Backend/Lang/api.en.lang.php
+++ b/Theme/Backend/Lang/api.en.lang.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/Lang/de.lang.php b/Theme/Backend/Lang/de.lang.php
index 910ddd0..ff4c7f9 100755
--- a/Theme/Backend/Lang/de.lang.php
+++ b/Theme/Backend/Lang/de.lang.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/Lang/en.lang.php b/Theme/Backend/Lang/en.lang.php
index dd0045e..2c2974e 100755
--- a/Theme/Backend/Lang/en.lang.php
+++ b/Theme/Backend/Lang/en.lang.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/checklist-list.tpl.php b/Theme/Backend/checklist-list.tpl.php
index 5990bdc..7daf3cd 100755
--- a/Theme/Backend/checklist-list.tpl.php
+++ b/Theme/Backend/checklist-list.tpl.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/checklist-template-create.tpl.php b/Theme/Backend/checklist-template-create.tpl.php
index 8465962..a73f567 100755
--- a/Theme/Backend/checklist-template-create.tpl.php
+++ b/Theme/Backend/checklist-template-create.tpl.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/checklist-template-list.tpl.php b/Theme/Backend/checklist-template-list.tpl.php
index 08d91b1..81fc7b8 100755
--- a/Theme/Backend/checklist-template-list.tpl.php
+++ b/Theme/Backend/checklist-template-list.tpl.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Checklist
  * @copyright Dennis Eichhorn
diff --git a/tests/Admin/AdminTest.php b/tests/Admin/AdminTest.php
index f94099c..449097f 100755
--- a/tests/Admin/AdminTest.php
+++ b/tests/Admin/AdminTest.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   tests
  * @copyright Dennis Eichhorn