diff --git a/CHANGELOG.md b/CHANGELOG.md
index e5a5e8d..ac33299 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+dcAdvancedCleaner 1.4 - 2023.10.07
+===========================================================
+* Require Dotclear 2.28
+* Require PHP 8.1
+* Upgrade to Dotclear 2.28
+
 dcAdvancedCleaner 1.3 - 2023.08.14
 ===========================================================
 * Require Dotclear 2.27
diff --git a/README.md b/README.md
index 613c25a..d483c8b 100644
--- a/README.md
+++ b/README.md
@@ -1,27 +1,23 @@
 # README
 
-[![Release](https://img.shields.io/badge/release-1.3-a2cbe9.svg)](https://git.dotclear.watch/JcDenis/dcAdvancedCleaner/releases)
-[![Date](https://img.shields.io/badge/date-2023.08.14-c44d58.svg)](https://git.dotclear.watch/JcDenis/dcAdvancedCleaner/releases)
-[![Dotclear](https://img.shields.io/badge/dotclear-v2.27-137bbb.svg)](https://fr.dotclear.org/download)
+[![Release](https://img.shields.io/badge/release-1.4-a2cbe9.svg)](https://git.dotclear.watch/JcDenis/dcAdvancedCleaner/releases)
+![Date](https://img.shields.io/badge/date-2023.10.07-c44d58.svg)
+[![Dotclear](https://img.shields.io/badge/dotclear-v2.28-137bbb.svg)](https://fr.dotclear.org/download)
 [![Dotaddict](https://img.shields.io/badge/dotaddict-official-9ac123.svg)](https://plugins.dotaddict.org/dc2/details/dcAdvancedCleaner)
-[![License](https://img.shields.io/github/license/JcDenis/dcAdvancedCleaner)](https://git.dotclear.watch/JcDenis/dcAdvancedCleaner/blob/master/LICENSE)
+[![License](https://img.shields.io/badge/license-GPL--2.0-ececec.svg)](https://git.dotclear.watch/JcDenis/dcAdvancedCleaner/src/branch/master/LICENSE)
 
-## WHAT IS DCADVANCEDCLEANER ?
+## ABOUT
 
-_dcAdvancedCleaner_ is a plugin for the open-source 
-web publishing software called Dotclear.
+_dcAdvancedCleaner_ is a plugin for the open-source web publishing software called [Dotclear](https://www.dotclear.org).
 
-It help clean up Dotclear install, plugins, themes, 
-settings, tables, cache, etc...
+> It help clean up Dotclear install, plugins, themes, settings, tables, cache, etc...
 
 ## REQUIREMENTS
 
-_dcAdvancedCleaner_ requires: 
-
 * Permissions superadmin
-* Dotclear 2.27
+* Dotclear 2.28
 * PHP >= 8.1
-* Plugin Uninstaller (temporary at https://github.com/JcDenis/Uninstaller )
+* Plugin Uninstaller
 
 ## USAGE
 
diff --git a/_define.php b/_define.php
index 7eee0d3..452cfa5 100644
--- a/_define.php
+++ b/_define.php
@@ -18,12 +18,12 @@ $this->registerModule(
     'Advanced cleaner',
     'Make a huge cleaning of dotclear',
     'Jean-Christian Denis and Contributors',
-    '1.3',
+    '1.4',
     [
         'requires' => [
             ['php', '8.1'],
-            ['core', '2.27'],
-            ['Uninstaller', '0.8'],
+            ['core', '2.28'],
+            ['Uninstaller', '1.0'],
         ],
         'permissions' => null,
         'type'        => 'plugin',
diff --git a/dcstore.xml b/dcstore.xml
index 02ae9b5..f641440 100644
--- a/dcstore.xml
+++ b/dcstore.xml
@@ -2,11 +2,11 @@
 <modules xmlns:da="http://dotaddict.org/da/">
   <module id="dcAdvancedCleaner">
     <name>Advanced cleaner</name>
-    <version>1.3</version>
+    <version>1.4</version>
     <author>Jean-Christian Denis and Contributors</author>
     <desc>Make a huge cleaning of dotclear</desc>
-    <file>https://git.dotclear.watch/JcDenis/dcAdvancedCleaner/releases/download/v1.3/plugin-dcAdvancedCleaner.zip</file>
-    <da:dcmin>2.27</da:dcmin>
+    <file>https://git.dotclear.watch/JcDenis/dcAdvancedCleaner/releases/download/v1.4/plugin-dcAdvancedCleaner.zip</file>
+    <da:dcmin>2.28</da:dcmin>
     <da:details>https://git.dotclear.watch/JcDenis/dcAdvancedCleaner/src/branch/master/README.md</da:details>
     <da:support>https://git.dotclear.watch/JcDenis/dcAdvancedCleaner/issues</da:support>
   </module>
diff --git a/src/Backend.php b/src/Backend.php
index 13c4cbd..09f2f1e 100644
--- a/src/Backend.php
+++ b/src/Backend.php
@@ -14,7 +14,7 @@ declare(strict_types=1);
 
 namespace Dotclear\Plugin\dcAdvancedCleaner;
 
-use dcCore;
+use Dotclear\App;
 use Dotclear\Core\Process;
 use Dotclear\Core\Backend\Favorites;
 
@@ -27,20 +27,19 @@ class Backend extends Process
 
     public static function process(): bool
     {
-        if (!self::status() || !dcCore::app()->plugins->moduleExists('Uninstaller')) {
+        if (!self::status() || !App::plugins()->moduleExists('Uninstaller')) {
             return false;
         }
 
         My::addBackendMenuItem();
 
-        dcCore::app()->addBehaviors([
+        App::behavior()->addBehaviors([
             'adminDashboardFavoritesV2' => function (Favorites $favs): void {
                 $favs->register(My::id(), [
                     'title'      => My::name(),
                     'url'        => My::manageURL(),
                     'small-icon' => My::icons(),
                     'large-icon' => My::icons(),
-                    //'permissions' => dcCore::app()->auth?->isSuperAdmin(),
                 ]);
             },
         ]);
diff --git a/src/Manage.php b/src/Manage.php
index 429f69c..3fd4509 100644
--- a/src/Manage.php
+++ b/src/Manage.php
@@ -14,7 +14,7 @@ declare(strict_types=1);
 
 namespace Dotclear\Plugin\dcAdvancedCleaner;
 
-use dcCore;
+use Dotclear\App;
 use Dotclear\Core\Process;
 use Dotclear\Core\Backend\{
     Notices,
@@ -44,7 +44,7 @@ class Manage extends Process
 
     public static function process(): bool
     {
-        if (!self::status() || !dcCore::app()->plugins->moduleExists('Uninstaller')) {
+        if (!self::status() || !App::plugins()->moduleExists('Uninstaller')) {
             return false;
         }
 
@@ -79,7 +79,7 @@ class Manage extends Process
                         $ns .= $vars->related . ':' . $id . ';';
                     }
                     $vars->cleaners->execute($vars->cleaner->id, $vars->action, $ns);
-                // other actions
+                    // other actions
                 } elseif ($vars->action != 'delete_related') {
                     foreach ($vars->entries as $ns) {
                         $vars->cleaners->execute($vars->cleaner->id, $vars->action, $ns);
@@ -89,7 +89,7 @@ class Manage extends Process
                 Notices::addSuccessNotice(__('Action successfuly excecuted'));
                 My::redirect(['part' => $vars->cleaner->id]);
             } catch (Exception $e) {
-                dcCore::app()->error->add($e->getMessage());
+                App::error()->add($e->getMessage());
             }
         }
 
@@ -112,7 +112,7 @@ class Manage extends Process
         );
 
         # --BEHAVIOR-- dcAdvancedCleanerAdminHeader
-        dcCore::app()->callBehavior('dcAdvancedCleanerAdminHeader');
+        App::behavior()->callBehavior('dcAdvancedCleanerAdminHeader');
 
         $breadcrumb = [
             __('Plugins') => '',
@@ -144,7 +144,7 @@ class Manage extends Process
 
         if (empty($vars->related)) {
             echo
-            (new Form('parts_menu'))->method('get')->action(dcCore::app()->admin->getPageURL())->fields([
+            (new Form('parts_menu'))->method('get')->action(App::backend()->getPageURL())->fields([
                 (new Para())->class('anchor-nav')->items([
                     (new Label(__('Goto:'), Label::OUTSIDE_LABEL_BEFORE))->for('part')->class('classic'),
                     (new Select(['part', 'select_part']))->default($vars->cleaner->id)->items($vars->combo),
@@ -172,7 +172,7 @@ class Manage extends Process
                 }
 
                 echo
-                '<form method="post" action="' . dcCore::app()->admin->getPageURL() . '" id="form-funcs">' .
+                '<form method="post" action="' . App::backend()->getPageURL() . '" id="form-funcs">' .
                 '<div class="table-outer">' .
                 '<table><caption>' . sprintf(__('There are %s entries'), count($rs)) . '</caption><thead><tr>' .
                 '<th colspan="2">' . __('Name') . '</th><th colspan="2">' . __('Objects') . '</th>' .
@@ -221,7 +221,7 @@ class Manage extends Process
             }
 
             echo
-            (new Form('option'))->method('post')->action(dcCore::app()->admin->getPageURL())->fields([
+            (new Form('option'))->method('post')->action(App::backend()->getPageURL())->fields([
                 (new Para())->items([
                     (new Submit('option-action'))->value(My::settings()->getGlobal('dcproperty_hide') ? __('Show Dotclear default properties') : __('Hide Dotclear default properties')),
                     (new Hidden('dcproperty_hide', My::settings()->getGlobal('dcproperty_hide') ? '0' : '1')),
@@ -240,7 +240,7 @@ class Manage extends Process
                 echo (new Text('p', __('There is nothing to display')))->class('error')->render();
             } else {
                 echo
-                '<form method="post" action="' . dcCore::app()->admin->getPageURL() . '" id="form-funcs">' .
+                '<form method="post" action="' . App::backend()->getPageURL() . '" id="form-funcs">' .
                 '<div class="table-outer">' .
                 '<table><caption>' . sprintf(__('There are %s related entries for the group "%s"'), count($rs), $vars->related) . '</caption><thead><tr>' .
                 '<th colspan="2">' . __('Name') . '</th><th>' . __('Objects') . '</th>' .
@@ -263,10 +263,11 @@ class Manage extends Process
                 '</tbody></table></div>' .
                 (new Para())->items([
                     (new Submit('do-action'))->class('delete')->value(__('I understand and I am want to delete this')),
-                    (new Hidden(['related'], $vars->related)),
-                    (new Hidden(['part'], $vars->cleaner->id)),
-                    (new Hidden(['action'], 'delete_related')),
-                    ... My::hiddenFields(),
+                    ... My::hiddenFields([
+                        'related' => $vars->related,
+                        'part'    => $vars->cleaner->id,
+                        'action'  => 'delete_related',
+                    ]),
                 ])->render() .
                 '<p class="warning">' .
                 __('Beware: All actions done here are irreversible and are directly applied') .
diff --git a/src/My.php b/src/My.php
index d873eef..f5eda4c 100644
--- a/src/My.php
+++ b/src/My.php
@@ -14,13 +14,13 @@ declare(strict_types=1);
 
 namespace Dotclear\Plugin\dcAdvancedCleaner;
 
-use dcCore;
+use Dotclear\App;
 use Dotclear\Module\MyPlugin;
 
 class My extends MyPlugin
 {
     public static function checkCustomContext(int $context): ?bool
     {
-        return $context === self::PREPEND ? dcCore::app()->auth->isSuperAdmin() : null;
+        return $context === self::PREPEND ? App::auth()->isSuperAdmin() : null;
     }
 }
diff --git a/src/Uninstall.php b/src/Uninstall.php
index f3b1104..7225665 100644
--- a/src/Uninstall.php
+++ b/src/Uninstall.php
@@ -14,7 +14,6 @@ declare(strict_types=1);
 
 namespace Dotclear\Plugin\dcAdvancedCleaner;
 
-use dcCore;
 use Dotclear\Core\Process;
 use Dotclear\Plugin\Uninstaller\Uninstaller;
 
@@ -27,7 +26,7 @@ class Uninstall extends Process
 
     public static function process(): bool
     {
-        if (!self::status() || !dcCore::app()->plugins->moduleExists('Uninstaller')) {
+        if (!self::status()) {
             return false;
         }