diff --git a/.mokogitea/CLAUDE.md b/.mokogitea/CLAUDE.md
index f85079e9..6c2ab8b8 100644
--- a/.mokogitea/CLAUDE.md
+++ b/.mokogitea/CLAUDE.md
@@ -7,7 +7,7 @@ Full-site backup and restore for Joomla — database, files, and configuration.
 | Field | Value |
 |---|---|
 | **Package** | `pkg_mokosuitebackup` |
-| **Language** | PHP 8.1+ |
+| **Language** | PHP 8.3+ |
 | **Branch** | develop on `dev`, merge to `main` (protected) |
 | **Wiki** | [MokoSuiteBackup Wiki](https://git.mokoconsulting.tech/MokoConsulting/MokoSuiteBackup/wiki) |
 
@@ -29,7 +29,7 @@ Joomla **package** with four sub-extensions:
 ### com_mokosuitebackup (Component)
 - Admin backend for managing backup profiles and records
 - Backup engine: `Engine/BackupEngine`, `Engine/DatabaseDumper`, `Engine/FileScanner`, `Engine/Archiver`
-- Joomla 4/5 MVC: Controllers, Models, Views, Tables
+- Joomla 6 MVC: Controllers, Models, Views, Tables
 - Namespace: `Joomla\Component\MokoSuiteBackup\Administrator`
 - DB tables: `#__mokosuitebackup_profiles`, `#__mokosuitebackup_records`
 - CLI: `cli/mokosuitebackup.php` for cron-based backups
@@ -64,8 +64,8 @@ Joomla **package** with four sub-extensions:
 
 ## Coding Standards
 
-- PHP 8.1+ minimum
-- Joomla 4/5 DI container pattern: `services/provider.php` → Extension class
+- PHP 8.3+ minimum (Joomla 6)
+- Joomla 6 DI container pattern: `services/provider.php` → Extension class
 - Legacy stub `.php` file required for plugin loader but empty
 - `SubscriberInterface` for event subscription (not `on*` method naming)
 - `bind() → check() → store()` for Table operations (not `save()`)
diff --git a/composer.json b/composer.json
index bd363ab3..08b68d15 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
 		}
 	],
 	"require": {
-		"php": ">=8.1",
+		"php": ">=8.3",
 		"ext-zip": "*",
 		"ext-pdo": "*",
 		"ext-pdo_mysql": "*",
diff --git a/source/packages/com_mokosuitebackup/src/Engine/MokoRestore.php b/source/packages/com_mokosuitebackup/src/Engine/MokoRestore.php
index 1d06801b..a90c037f 100644
--- a/source/packages/com_mokosuitebackup/src/Engine/MokoRestore.php
+++ b/source/packages/com_mokosuitebackup/src/Engine/MokoRestore.php
@@ -480,8 +480,8 @@ function actionPreflight(): array
     $checks[] = [
         'label' => 'PHP Version',
         'value' => PHP_VERSION,
-        'ok'    => version_compare(PHP_VERSION, '8.1', '>='),
-        'hint'  => 'Joomla 4/5 requires PHP 8.1+',
+        'ok'    => version_compare(PHP_VERSION, '8.3', '>='),
+        'hint'  => 'Joomla 6 requires PHP 8.3+',
     ];
 
     $checks[] = [
diff --git a/source/packages/com_mokosuitebackup/src/Model/DashboardModel.php b/source/packages/com_mokosuitebackup/src/Model/DashboardModel.php
index 8ad63dfc..7a965cad 100644
--- a/source/packages/com_mokosuitebackup/src/Model/DashboardModel.php
+++ b/source/packages/com_mokosuitebackup/src/Model/DashboardModel.php
@@ -104,7 +104,7 @@ class DashboardModel extends BaseDatabaseModel
 		// PHP version
 		$checks[] = (object) [
 			'label'  => 'PHP Version',
-			'status' => version_compare(PHP_VERSION, '8.1.0', '>='),
+			'status' => version_compare(PHP_VERSION, '8.3.0', '>='),
 			'detail' => PHP_VERSION,
 		];