diff --git a/Admin/Install/Navigation.php b/Admin/Install/Navigation.php
index 35b7340..ed58330 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\Exchange\Admin\Install
  * @copyright Dennis Eichhorn
diff --git a/Admin/Installer.php b/Admin/Installer.php
index 1ab405b..0c32572 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\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Admin/Status.php b/Admin/Status.php
index 3c47a0a..b5328ba 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\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Admin/Uninstaller.php b/Admin/Uninstaller.php
index 0ec143e..122677b 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\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Admin/Updater.php b/Admin/Updater.php
index 78548e1..ed9b39d 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\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Controller/ApiController.php b/Controller/ApiController.php
index 1d5ea1c..7947f13 100755
--- a/Controller/ApiController.php
+++ b/Controller/ApiController.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Controller/BackendController.php b/Controller/BackendController.php
index 134cfd7..13552ce 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\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Controller/Controller.php b/Controller/Controller.php
index 8792073..d75268a 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\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Import/AccountImport.php b/Interfaces/GSD/Import/AccountImport.php
index 9536048..ff7e990 100755
--- a/Interfaces/GSD/Import/AccountImport.php
+++ b/Interfaces/GSD/Import/AccountImport.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Import
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Import/ArticleImport.php b/Interfaces/GSD/Import/ArticleImport.php
index 385befd..632209e 100755
--- a/Interfaces/GSD/Import/ArticleImport.php
+++ b/Interfaces/GSD/Import/ArticleImport.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Import
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Import/BatchPostingImport.php b/Interfaces/GSD/Import/BatchPostingImport.php
index 6f5791e..0c8c6f6 100755
--- a/Interfaces/GSD/Import/BatchPostingImport.php
+++ b/Interfaces/GSD/Import/BatchPostingImport.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Import
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Import/CostCenterImport.php b/Interfaces/GSD/Import/CostCenterImport.php
index a23d0f9..1411a5f 100755
--- a/Interfaces/GSD/Import/CostCenterImport.php
+++ b/Interfaces/GSD/Import/CostCenterImport.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Import
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Import/CostObjectImport.php b/Interfaces/GSD/Import/CostObjectImport.php
index 860ab4e..5520b66 100755
--- a/Interfaces/GSD/Import/CostObjectImport.php
+++ b/Interfaces/GSD/Import/CostObjectImport.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Import
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Import/CustomerImport.php b/Interfaces/GSD/Import/CustomerImport.php
index 4123069..2632ef6 100755
--- a/Interfaces/GSD/Import/CustomerImport.php
+++ b/Interfaces/GSD/Import/CustomerImport.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Import
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Import/InvoiceImport.php b/Interfaces/GSD/Import/InvoiceImport.php
index 7278b37..50e647f 100755
--- a/Interfaces/GSD/Import/InvoiceImport.php
+++ b/Interfaces/GSD/Import/InvoiceImport.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Import
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Import/PostingImport.php b/Interfaces/GSD/Import/PostingImport.php
index 718456b..4d10e62 100755
--- a/Interfaces/GSD/Import/PostingImport.php
+++ b/Interfaces/GSD/Import/PostingImport.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Import
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Import/SupplierImport.php b/Interfaces/GSD/Import/SupplierImport.php
index a075501..bb7aa89 100755
--- a/Interfaces/GSD/Import/SupplierImport.php
+++ b/Interfaces/GSD/Import/SupplierImport.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Import
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Importer.php b/Interfaces/GSD/Importer.php
index b534032..cc16c25 100755
--- a/Interfaces/GSD/Importer.php
+++ b/Interfaces/GSD/Importer.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Interfaces
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Lang/de.lang.php b/Interfaces/GSD/Lang/de.lang.php
index 339dd0b..3ae3e6e 100644
--- a/Interfaces/GSD/Lang/de.lang.php
+++ b/Interfaces/GSD/Lang/de.lang.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Lang/en.lang.php b/Interfaces/GSD/Lang/en.lang.php
index 4393bc8..e458540 100755
--- a/Interfaces/GSD/Lang/en.lang.php
+++ b/Interfaces/GSD/Lang/en.lang.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/Account.php b/Interfaces/GSD/Model/Account.php
index 1bc6663..37e8342 100755
--- a/Interfaces/GSD/Model/Account.php
+++ b/Interfaces/GSD/Model/Account.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/BatchPosting.php b/Interfaces/GSD/Model/BatchPosting.php
index 9a5491e..c3a5a92 100755
--- a/Interfaces/GSD/Model/BatchPosting.php
+++ b/Interfaces/GSD/Model/BatchPosting.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/ExchangeType.php b/Interfaces/GSD/Model/ExchangeType.php
index 5661953..2956679 100755
--- a/Interfaces/GSD/Model/ExchangeType.php
+++ b/Interfaces/GSD/Model/ExchangeType.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Models
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/GSDAddress.php b/Interfaces/GSD/Model/GSDAddress.php
index 57f8fcf..cbd047f 100755
--- a/Interfaces/GSD/Model/GSDAddress.php
+++ b/Interfaces/GSD/Model/GSDAddress.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/GSDAddressMapper.php b/Interfaces/GSD/Model/GSDAddressMapper.php
index 024d4f7..379fb79 100755
--- a/Interfaces/GSD/Model/GSDAddressMapper.php
+++ b/Interfaces/GSD/Model/GSDAddressMapper.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/GSDArticle.php b/Interfaces/GSD/Model/GSDArticle.php
index 19bf548..5479a53 100755
--- a/Interfaces/GSD/Model/GSDArticle.php
+++ b/Interfaces/GSD/Model/GSDArticle.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/GSDArticleMapper.php b/Interfaces/GSD/Model/GSDArticleMapper.php
index e3f6300..ac84317 100755
--- a/Interfaces/GSD/Model/GSDArticleMapper.php
+++ b/Interfaces/GSD/Model/GSDArticleMapper.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/GSDCostCenter.php b/Interfaces/GSD/Model/GSDCostCenter.php
index 1b34c4a..8920986 100755
--- a/Interfaces/GSD/Model/GSDCostCenter.php
+++ b/Interfaces/GSD/Model/GSDCostCenter.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/GSDCostCenterMapper.php b/Interfaces/GSD/Model/GSDCostCenterMapper.php
index 97fba8c..ab0fee3 100755
--- a/Interfaces/GSD/Model/GSDCostCenterMapper.php
+++ b/Interfaces/GSD/Model/GSDCostCenterMapper.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/GSDCostObject.php b/Interfaces/GSD/Model/GSDCostObject.php
index b20cc23..d275138 100755
--- a/Interfaces/GSD/Model/GSDCostObject.php
+++ b/Interfaces/GSD/Model/GSDCostObject.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/GSDCostObjectMapper.php b/Interfaces/GSD/Model/GSDCostObjectMapper.php
index d33e2d2..c659dee 100755
--- a/Interfaces/GSD/Model/GSDCostObjectMapper.php
+++ b/Interfaces/GSD/Model/GSDCostObjectMapper.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/GSDCustomer.php b/Interfaces/GSD/Model/GSDCustomer.php
index ddfdabd..5a8f794 100755
--- a/Interfaces/GSD/Model/GSDCustomer.php
+++ b/Interfaces/GSD/Model/GSDCustomer.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/GSDCustomerMapper.php b/Interfaces/GSD/Model/GSDCustomerMapper.php
index 41dd073..05aada5 100755
--- a/Interfaces/GSD/Model/GSDCustomerMapper.php
+++ b/Interfaces/GSD/Model/GSDCustomerMapper.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/GSDSupplier.php b/Interfaces/GSD/Model/GSDSupplier.php
index e1745f3..03de9b2 100755
--- a/Interfaces/GSD/Model/GSDSupplier.php
+++ b/Interfaces/GSD/Model/GSDSupplier.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/GSDSupplierMapper.php b/Interfaces/GSD/Model/GSDSupplierMapper.php
index e413c23..c91bc74 100755
--- a/Interfaces/GSD/Model/GSDSupplierMapper.php
+++ b/Interfaces/GSD/Model/GSDSupplierMapper.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/Invoice.php b/Interfaces/GSD/Model/Invoice.php
index 6a7a015..68b4c12 100755
--- a/Interfaces/GSD/Model/Invoice.php
+++ b/Interfaces/GSD/Model/Invoice.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/NullGSDAddress.php b/Interfaces/GSD/Model/NullGSDAddress.php
index f3177e6..a8916e9 100644
--- a/Interfaces/GSD/Model/NullGSDAddress.php
+++ b/Interfaces/GSD/Model/NullGSDAddress.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/NullGSDArticle.php b/Interfaces/GSD/Model/NullGSDArticle.php
index 48d10cb..cdedbe9 100644
--- a/Interfaces/GSD/Model/NullGSDArticle.php
+++ b/Interfaces/GSD/Model/NullGSDArticle.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/NullGSDCostCenter.php b/Interfaces/GSD/Model/NullGSDCostCenter.php
index 9eeda3d..ed427d2 100644
--- a/Interfaces/GSD/Model/NullGSDCostCenter.php
+++ b/Interfaces/GSD/Model/NullGSDCostCenter.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/NullGSDCostObject.php b/Interfaces/GSD/Model/NullGSDCostObject.php
index f547384..7af01ed 100644
--- a/Interfaces/GSD/Model/NullGSDCostObject.php
+++ b/Interfaces/GSD/Model/NullGSDCostObject.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/NullGSDCustomer.php b/Interfaces/GSD/Model/NullGSDCustomer.php
index 9a782e8..83cc186 100644
--- a/Interfaces/GSD/Model/NullGSDCustomer.php
+++ b/Interfaces/GSD/Model/NullGSDCustomer.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/NullGSDSupplier.php b/Interfaces/GSD/Model/NullGSDSupplier.php
index 548a6e9..11f58bb 100644
--- a/Interfaces/GSD/Model/NullGSDSupplier.php
+++ b/Interfaces/GSD/Model/NullGSDSupplier.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/Posting.php b/Interfaces/GSD/Model/Posting.php
index 3447cd2..fee13d0 100755
--- a/Interfaces/GSD/Model/Posting.php
+++ b/Interfaces/GSD/Model/Posting.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/Segment.php b/Interfaces/GSD/Model/Segment.php
index 1eef5f2..d48985f 100755
--- a/Interfaces/GSD/Model/Segment.php
+++ b/Interfaces/GSD/Model/Segment.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/GSD/Model/SegmentType.php b/Interfaces/GSD/Model/SegmentType.php
index 77bd667..7a11798 100755
--- a/Interfaces/GSD/Model/SegmentType.php
+++ b/Interfaces/GSD/Model/SegmentType.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\GSD\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/Intrexx/Import/PromotionImport.php b/Interfaces/Intrexx/Import/PromotionImport.php
index 4143fbb..e3c0c19 100755
--- a/Interfaces/Intrexx/Import/PromotionImport.php
+++ b/Interfaces/Intrexx/Import/PromotionImport.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\Intrexx\Import
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/Intrexx/Import/SeminarImport.php b/Interfaces/Intrexx/Import/SeminarImport.php
index 05a258b..1909279 100755
--- a/Interfaces/Intrexx/Import/SeminarImport.php
+++ b/Interfaces/Intrexx/Import/SeminarImport.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\Intrexx\Import
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/Intrexx/Import/VisitImport.php b/Interfaces/Intrexx/Import/VisitImport.php
index ce0d296..df67fe7 100755
--- a/Interfaces/Intrexx/Import/VisitImport.php
+++ b/Interfaces/Intrexx/Import/VisitImport.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\Intrexx\Import
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/Intrexx/Importer.php b/Interfaces/Intrexx/Importer.php
index 6fdcb05..bde302d 100755
--- a/Interfaces/Intrexx/Importer.php
+++ b/Interfaces/Intrexx/Importer.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Interfaces
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/Intrexx/Lang/en.lang.php b/Interfaces/Intrexx/Lang/en.lang.php
index 692c74f..8553ca3 100644
--- a/Interfaces/Intrexx/Lang/en.lang.php
+++ b/Interfaces/Intrexx/Lang/en.lang.php
@@ -4,7 +4,7 @@ declare(strict_types=1);
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/Intrexx/Model/Promotion.php b/Interfaces/Intrexx/Model/Promotion.php
index 1e762ba..ae62314 100755
--- a/Interfaces/Intrexx/Model/Promotion.php
+++ b/Interfaces/Intrexx/Model/Promotion.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\Intrexx\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/Intrexx/Model/Seminar.php b/Interfaces/Intrexx/Model/Seminar.php
index 57fea63..9776871 100755
--- a/Interfaces/Intrexx/Model/Seminar.php
+++ b/Interfaces/Intrexx/Model/Seminar.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\Intrexx\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/Intrexx/Model/Visit.php b/Interfaces/Intrexx/Model/Visit.php
index 04a6815..b9b7538 100755
--- a/Interfaces/Intrexx/Model/Visit.php
+++ b/Interfaces/Intrexx/Model/Visit.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Interfaces\Intrexx\Model
  * @copyright Dennis Eichhorn
diff --git a/Interfaces/OMS/Lang/en.lang.php b/Interfaces/OMS/Lang/en.lang.php
index 5a64598..384e0ac 100755
--- a/Interfaces/OMS/Lang/en.lang.php
+++ b/Interfaces/OMS/Lang/en.lang.php
@@ -4,7 +4,7 @@ declare(strict_types=1);
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Models/ExchangeLog.php b/Models/ExchangeLog.php
index ced426c..6667b8e 100644
--- a/Models/ExchangeLog.php
+++ b/Models/ExchangeLog.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Models
  * @copyright Dennis Eichhorn
diff --git a/Models/ExchangeLogMapper.php b/Models/ExchangeLogMapper.php
index 30997f4..3735137 100644
--- a/Models/ExchangeLogMapper.php
+++ b/Models/ExchangeLogMapper.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Models
  * @copyright Dennis Eichhorn
diff --git a/Models/ExchangeType.php b/Models/ExchangeType.php
index a82c4f3..acf1029 100644
--- a/Models/ExchangeType.php
+++ b/Models/ExchangeType.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Models
  * @copyright Dennis Eichhorn
diff --git a/Models/ImporterAbstract.php b/Models/ImporterAbstract.php
index 7e078a9..8c8bb3e 100755
--- a/Models/ImporterAbstract.php
+++ b/Models/ImporterAbstract.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Interfaces
  * @copyright Dennis Eichhorn
diff --git a/Models/InterfaceManager.php b/Models/InterfaceManager.php
index 0e695cd..4f847a1 100755
--- a/Models/InterfaceManager.php
+++ b/Models/InterfaceManager.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   phpOMS\Module
  * @copyright Dennis Eichhorn
diff --git a/Models/InterfaceManagerMapper.php b/Models/InterfaceManagerMapper.php
index 6b27fa7..67bd921 100755
--- a/Models/InterfaceManagerMapper.php
+++ b/Models/InterfaceManagerMapper.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange\Models
  * @copyright Dennis Eichhorn
diff --git a/Models/NullExchangeLog.php b/Models/NullExchangeLog.php
index 21fe3fb..3a89588 100644
--- a/Models/NullExchangeLog.php
+++ b/Models/NullExchangeLog.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   phpOMS\Module
  * @copyright Dennis Eichhorn
diff --git a/Models/NullInterfaceManager.php b/Models/NullInterfaceManager.php
index 68e8a0f..13cb3b4 100644
--- a/Models/NullInterfaceManager.php
+++ b/Models/NullInterfaceManager.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   phpOMS\Module
  * @copyright Dennis Eichhorn
diff --git a/Models/PermissionState.php b/Models/PermissionState.php
index 25d8ddb..5ac62ed 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\Exchange\Models
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/Lang/Navigation.de.lang.php b/Theme/Backend/Lang/Navigation.de.lang.php
index a5e9cf8..3089d9f 100644
--- 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\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/Lang/Navigation.en.lang.php b/Theme/Backend/Lang/Navigation.en.lang.php
index a5e9cf8..3089d9f 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\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/Lang/de.lang.php b/Theme/Backend/Lang/de.lang.php
index 48a1c56..faa1f06 100644
--- 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\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/Lang/en.lang.php b/Theme/Backend/Lang/en.lang.php
index ee4f7c0..0664e21 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\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/exchange-dashboard.tpl.php b/Theme/Backend/exchange-dashboard.tpl.php
index 3abf36b..d263b86 100755
--- a/Theme/Backend/exchange-dashboard.tpl.php
+++ b/Theme/Backend/exchange-dashboard.tpl.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/exchange-export-list.tpl.php b/Theme/Backend/exchange-export-list.tpl.php
index bf40f8c..bbf7b68 100755
--- a/Theme/Backend/exchange-export-list.tpl.php
+++ b/Theme/Backend/exchange-export-list.tpl.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/exchange-export.tpl.php b/Theme/Backend/exchange-export.tpl.php
index 3abf36b..d263b86 100755
--- a/Theme/Backend/exchange-export.tpl.php
+++ b/Theme/Backend/exchange-export.tpl.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/exchange-import-list.tpl.php b/Theme/Backend/exchange-import-list.tpl.php
index 52d1fdc..0ad269d 100755
--- a/Theme/Backend/exchange-import-list.tpl.php
+++ b/Theme/Backend/exchange-import-list.tpl.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange
  * @copyright Dennis Eichhorn
diff --git a/Theme/Backend/exchange-import.tpl.php b/Theme/Backend/exchange-import.tpl.php
index 559e418..b745f2b 100755
--- a/Theme/Backend/exchange-import.tpl.php
+++ b/Theme/Backend/exchange-import.tpl.php
@@ -2,7 +2,7 @@
 /**
  * Orange Management
  *
- * PHP Version 7.4
+ * PHP Version 8.0
  *
  * @package   Modules\Exchange
  * @copyright Dennis Eichhorn
diff --git a/tests/Admin/AdminTest.php b/tests/Admin/AdminTest.php
index 1914be7..af08147 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