diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0b33f03..69df81c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,10 @@
-pacKman 2023.07.29
+pacKman 2023.10.06
+===========================================================
+* Require Dotclear 2.27
+* Require PHP 8.1+
+* Update to Dotclear 2.28-dev
+
+pacKman 2023.08.06
 ===========================================================
 * Require Dotclear 2.27
 * Require PHP 8.1+
diff --git a/README.md b/README.md
index 29c81c0..49576cd 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 # README
 
-[![Release](https://img.shields.io/badge/release-2023.08.06-a2cbe9.svg)](https://git.dotclear.watch/JcDenis/pacKman/releases)
-[![Date](https://img.shields.io/badge/date-2023.08.06-c44d58.svg)](https://git.dotclear.watch/JcDenis/pacKman/releases)
-[![Dotclear](https://img.shields.io/badge/dotclear-v2.27-137bbb.svg)](https://fr.dotclear.org/download)
+[![Release](https://img.shields.io/badge/release-2023.10.06-a2cbe9.svg)](https://git.dotclear.watch/JcDenis/pacKman/releases)
+[![Date](https://img.shields.io/badge/date-2023.10.07-c44d58.svg)](https://git.dotclear.watch/JcDenis/pacKman/releases)
+[![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/pacKman)
 [![License](https://img.shields.io/github/license/JcDenis/pacKman)](https://git.dotclear.watch/JcDenis/pacKman/blob/master/LICENSE)
 
@@ -19,7 +19,7 @@ themes and plugins from Dotclear administration pages.
 _pacKman_ requires: 
 
 * Super administrator permissions
-* Dotclear 2.27
+* Dotclear 2.28
 * PHP 8.1+
 * A writable cache directory 
 * A writable directory to put packages. (can be VAR dir)
diff --git a/_define.php b/_define.php
index e07843f..878db8b 100644
--- a/_define.php
+++ b/_define.php
@@ -20,11 +20,11 @@ $this->registerModule(
     'Packages repository',
     'Manage your Dotclear packages',
     'Jean-Christian Denis',
-    '2023.08.06',
+    '2023.10.06',
     [
         'requires' => [
             ['php', '8.1'],
-            ['core', '2.27'],
+            ['core', '2.28'],
         ],
         'permissions' => null,
         'type'        => 'plugin',
diff --git a/dcstore.xml b/dcstore.xml
index 9caebde..e699751 100644
--- a/dcstore.xml
+++ b/dcstore.xml
@@ -2,11 +2,11 @@
 <modules xmlns:da="http://dotaddict.org/da/">
   <module id="pacKman">
     <name>Packages repository</name>
-    <version>2023.08.06</version>
+    <version>2023.10.06</version>
     <author>Jean-Christian Denis</author>
     <desc>Manage your Dotclear packages</desc>
-    <file>https://git.dotclear.watch/JcDenis/pacKman/releases/download/v2023.08.06/plugin-pacKman.zip</file>
-    <da:dcmin>2.27</da:dcmin>
+    <file>https://github.com/JcDenis/pacKman/releases/download/v2023.10.06/plugin-pacKman.zip</file>
+    <da:dcmin>2.28</da:dcmin>
     <da:details>https://git.dotclear.watch/JcDenis/pacKman/src/branch/master/README.md</da:details>
     <da:support>https://git.dotclear.watch/JcDenis/pacKman/issues</da:support>
   </module>
diff --git a/src/Backend.php b/src/Backend.php
index 90561ff..271da93 100644
--- a/src/Backend.php
+++ b/src/Backend.php
@@ -14,7 +14,7 @@ declare(strict_types=1);
 
 namespace Dotclear\Plugin\pacKman;
 
-use dcCore;
+use Dotclear\App;
 use Dotclear\Core\Process;
 use Dotclear\Core\Backend\Favorites;
 
@@ -33,13 +33,12 @@ class Backend extends Process
 
         My::addBackendMenuItem();
 
-        dcCore::app()->addBehavior('adminDashboardFavoritesV2', function (Favorites $favs): void {
+        App::behavior()->addBehavior('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(),
+                'large-icon' => My::icons()
             ]);
         });
 
diff --git a/src/Config.php b/src/Config.php
index 2fb7f51..0301ff6 100644
--- a/src/Config.php
+++ b/src/Config.php
@@ -14,7 +14,7 @@ declare(strict_types=1);
 
 namespace Dotclear\Plugin\pacKman;
 
-use dcCore;
+use Dotclear\App;
 use Dotclear\Core\Process;
 use Dotclear\Core\Backend\Notices;
 use Dotclear\Helper\Html\Form\{
@@ -62,13 +62,13 @@ class Config extends Process
             Notices::addSuccessNotice(
                 __('Configuration has been successfully updated.')
             );
-            dcCore::app()->admin->url->redirect('admin.plugins', [
+            App::backend()->url->redirect('admin.plugins', [
                 'module' => My::id(),
                 'conf'   => '1',
-                'redir'  => dcCore::app()->admin->__get('list')->getRedir(),
+                'redir'  => App::backend()->__get('list')->getRedir(),
             ]);
         } catch (Exception $e) {
-            dcCore::app()->error->add($e->getMessage());
+            App::error()->add($e->getMessage());
         }
 
         return true;
@@ -119,8 +119,8 @@ class Config extends Process
                 (new Note())->class('form-note')->text(
                     sprintf(
                         __('Preconization: %s'),
-                        dcCore::app()->blog?->public_path ?
-                        dcCore::app()->blog->public_path : __("Blog's public directory")
+                        App::blog()->publicPath() ?
+                        App::blog()->publicPath() : __("Blog's public directory")
                     ) . ' ' . __('Leave it empty to use Dotclear VAR directory')
                 ),
                 // pack_overwrite
diff --git a/src/Core.php b/src/Core.php
index 1fcd380..ae2d6de 100644
--- a/src/Core.php
+++ b/src/Core.php
@@ -14,12 +14,11 @@ declare(strict_types=1);
 
 namespace Dotclear\Plugin\pacKman;
 
-use dcCore;
-use dcModuleDefine;
-use dcModules;
+use Dotclear\App;
 use Dotclear\Helper\File\Files;
 use Dotclear\Helper\File\Path;
 use Dotclear\Helper\File\Zip\Unzip;
+use Dotclear\Module\ModuleDefine;
 use Exception;
 
 class Core
@@ -59,8 +58,8 @@ class Core
         }
 
         $sandboxes = [
-            'theme'  => clone dcCore::app()->themes,
-            'plugin' => clone dcCore::app()->plugins,
+            'theme'  => clone App::themes(),
+            'plugin' => clone App::plugins(),
         ];
 
         $i = 0;
@@ -73,13 +72,13 @@ class Core
             if ($zip_root_dir != false) {
                 $target = dirname($zip_file);
                 $path   = $target . DIRECTORY_SEPARATOR . $zip_root_dir;
-                $define = $zip_root_dir . '/' . dcModules::MODULE_FILE_DEFINE;
-                $init   = $zip_root_dir . '/' . dcModules::MODULE_FILE_INIT;
+                $define = $zip_root_dir . '/' . App::plugins()::MODULE_FILE_DEFINE;
+                $init   = $zip_root_dir . '/' . App::plugins()::MODULE_FILE_INIT;
             } else {
                 $target = dirname($zip_file) . DIRECTORY_SEPARATOR . preg_replace('/\.([^.]+)$/', '', basename($zip_file));
                 $path   = $target;
-                $define = dcModules::MODULE_FILE_DEFINE;
-                $init   = dcModules::MODULE_FILE_INIT;
+                $define = App::plugins()::MODULE_FILE_DEFINE;
+                $init   = App::plugins()::MODULE_FILE_INIT;
             }
 
             if ($zip->isEmpty()) {
@@ -135,7 +134,7 @@ class Core
         return $res;
     }
 
-    public static function pack(dcModuleDefine $define, string $root, array $files, bool $overwrite = false, array $exclude = [], bool $nocomment = false, bool $fixnewline = false): bool
+    public static function pack(ModuleDefine $define, string $root, array $files, bool $overwrite = false, array $exclude = [], bool $nocomment = false, bool $fixnewline = false): bool
     {
         // check define
         if (!$define->isDefined()
@@ -195,7 +194,7 @@ class Core
         return true;
     }
 
-    private static function getFile(string $file, dcModuleDefine $define): string
+    private static function getFile(string $file, ModuleDefine $define): string
     {
         $file = str_replace(
             [
diff --git a/src/Install.php b/src/Install.php
index f7c2d75..cfda81b 100644
--- a/src/Install.php
+++ b/src/Install.php
@@ -14,8 +14,7 @@ declare(strict_types=1);
 
 namespace Dotclear\Plugin\pacKman;
 
-use dcCore;
-use dcNamespace;
+use Dotclear\App;
 use Dotclear\Core\Process;
 use Exception;
 
@@ -38,7 +37,7 @@ class Install extends Process
 
             return true;
         } catch (Exception $e) {
-            dcCore::app()->error->add($e->getMessage());
+            App::error()->add($e->getMessage());
 
             return false;
         }
@@ -46,23 +45,23 @@ class Install extends Process
 
     public static function growUp(): void
     {
-        $current = dcCore::app()->getVersion(My::id());
+        $current = App::version()->getVersion(My::id());
 
         // Update settings id, ns
         if ($current && version_compare($current, '2022.12.19.1', '<=')) {
-            $record = dcCore::app()->con->select(
-                'SELECT * FROM ' . dcCore::app()->prefix . dcNamespace::NS_TABLE_NAME . ' ' .
+            $record = App::con()->select(
+                'SELECT * FROM ' . App::con()->prefix() . App::blogWorkspace()::NS_TABLE_NAME . ' ' .
                 "WHERE setting_ns = 'pacKman' "
             );
 
             while ($record->fetch()) {
                 if (preg_match('/^packman_(.*?)$/', $record->f('setting_id'), $match)) {
-                    $cur = dcCore::app()->con->openCursor(dcCore::app()->prefix . dcNamespace::NS_TABLE_NAME);
+                    $cur = App::blogWorspace()->openBlogWorkspaceCursor();
                     $cur->setField('setting_id', $match[1]);
                     $cur->setField('setting_ns', My::id());
                     $cur->update(
                         "WHERE setting_id = '" . $record->f('setting_id') . "' and setting_ns = 'pacKman' " .
-                        'AND blog_id ' . (null === $record->f('blog_id') ? 'IS NULL ' : ("= '" . dcCore::app()->con->escapeStr($record->f('blog_id')) . "' "))
+                        'AND blog_id ' . (null === $record->f('blog_id') ? 'IS NULL ' : ("= '" . App::con()->escapeStr($record->f('blog_id')) . "' "))
                     );
                 }
             }
diff --git a/src/Manage.php b/src/Manage.php
index 2d2f529..95016b1 100644
--- a/src/Manage.php
+++ b/src/Manage.php
@@ -14,9 +14,7 @@ declare(strict_types=1);
 
 namespace Dotclear\Plugin\pacKman;
 
-/* dotclear ns */
-use dcCore;
-use dcThemes;
+use Dotclear\App;
 use Dotclear\Core\Process;
 use Dotclear\Core\Backend\{
     Notices,
@@ -53,12 +51,9 @@ class Manage extends Process
         $dir    = Utils::getRepositoryDir($s->pack_repository, $repo);
 
         # Modules
-        if (!(dcCore::app()->themes instanceof dcThemes)) {
-            dcCore::app()->themes = new dcThemes();
-            dcCore::app()->themes->loadModules((string) dcCore::app()->blog?->themes_path, null);
+        if (App::themes()->isEmpty()) {
+            App::themes()->loadModules(App::blog()->themesPath(), null);
         }
-        $themes  = dcCore::app()->themes;
-        $plugins = dcCore::app()->plugins;
 
         # Rights
         $is_writable = Utils::isWritable($dir, $s->pack_filename);
@@ -85,7 +80,7 @@ class Manage extends Process
                         && is_file($module->get('root')) && is_readable($module->get('root'))
                     ) {
                         # --BEHAVIOR-- packmanBeforeDownloadPackage
-                        dcCore::app()->callBehavior('packmanBeforeDownloadPackage', $module->dump(), $type);
+                        App::behavior()->callBehavior('packmanBeforeDownloadPackage', $module->dump(), $type);
 
                         header('Content-Type: application/zip');
                         header('Content-Length: ' . filesize($module->get('root')));
@@ -93,7 +88,7 @@ class Manage extends Process
                         readfile($module->get('root'));
 
                         # --BEHAVIOR-- packmanAfterDownloadPackage
-                        dcCore::app()->callBehavior('packmanAfterDownloadPackage', $module->dump(), $type);
+                        App::behavior()->callBehavior('packmanAfterDownloadPackage', $module->dump(), $type);
 
                         exit;
                     }
@@ -114,17 +109,25 @@ class Manage extends Process
                     My::redirect([], '#packman-' . $type);
                 }
 
-            # Pack
+                # Pack
             } elseif ($action == 'packup') {
                 foreach ($_POST['modules'] as $root => $id) {
-                    if (!dcCore::app()->{$type}->getDefine($id)->isDefined()) {
-                        throw new Exception('No such module');
+                    if ($type == 'themes') {
+                        if (!App::themes()->getDefine($id)->isDefined()) {
+                            throw new Exception('No such module');
+                        }
+
+                        $module = App::themes()->getDefine($id);
+                    } else {
+                        if (!App::plugins()->getDefine($id)->isDefined()) {
+                            throw new Exception('No such module');
+                        }
+
+                        $module = App::plugins()->getDefine($id);
                     }
 
-                    $module = dcCore::app()->{$type}->getDefine($id);
-
                     # --BEHAVIOR-- packmanBeforeCreatePackage
-                    dcCore::app()->callBehavior('packmanBeforeCreatePackage', $module->dump());
+                    App::behavior()->callBehavior('packmanBeforeCreatePackage', $module->dump());
 
                     Core::pack(
                         $module,
@@ -137,7 +140,7 @@ class Manage extends Process
                     );
 
                     # --BEHAVIOR-- packmanAfterCreatePackage
-                    dcCore::app()->callBehavior('packmanAfterCreatePackage', $module->dump());
+                    App::behavior()->callBehavior('packmanAfterCreatePackage', $module->dump());
                 }
 
                 Notices::addSuccessNotice(
@@ -150,7 +153,7 @@ class Manage extends Process
                     My::redirect([], '#packman-' . $type);
                 }
 
-            # Delete
+                # Delete
             } elseif ($action == 'delete') {
                 $del_success = false;
                 foreach ($_POST['modules'] as $root => $id) {
@@ -175,21 +178,20 @@ class Manage extends Process
                     My::redirect([], '#packman-repository-' . $type);
                 }
 
-            # Install
+                # Install
             } elseif ($action == 'install') {
                 foreach ($_POST['modules'] as $root => $id) {
                     # --BEHAVIOR-- packmanBeforeInstallPackage
-                    dcCore::app()->callBehavior('packmanBeforeInstallPackage', $type, $id, $root);
+                    App::behavior()->callBehavior('packmanBeforeInstallPackage', $type, $id, $root);
 
-                    if ($type == 'plugins') {
-                        $plugins->installPackage($root, $plugins);
-                    }
                     if ($type == 'themes') {
-                        $themes->installPackage($root, $themes);
+                        App::themes()->installPackage($root, App::themes());
+                    } else {
+                        App::plugins()->installPackage($root, App::plugins());
                     }
 
                     # --BEHAVIOR-- packmanAfterInstallPackage
-                    dcCore::app()->callBehavior('packmanAfterInstallPackage', $type, $id, $root);
+                    App::behavior()->callBehavior('packmanAfterInstallPackage', $type, $id, $root);
                 }
 
                 Notices::addSuccessNotice(
@@ -202,7 +204,7 @@ class Manage extends Process
                     My::redirect([], '#packman-repository-' . $type);
                 }
 
-            # Copy
+                # Copy
             } elseif (strpos($action, 'copy_to_') !== false) {
                 $dest = (string) $dir;
                 if ($action == 'copy_to_plugins') {
@@ -228,7 +230,7 @@ class Manage extends Process
                     My::redirect([], '#packman-repository-' . $type);
                 }
 
-            # Move
+                # Move
             } elseif (strpos($action, 'move_to_') !== false) {
                 $dest = (string) $dir;
                 if ($action == 'move_to_plugins') {
@@ -256,7 +258,7 @@ class Manage extends Process
                 }
             }
         } catch (Exception $e) {
-            dcCore::app()->error->add($e->getMessage());
+            App::error()->add($e->getMessage());
         }
 
         return true;
@@ -301,7 +303,7 @@ class Manage extends Process
             My::jsLoad('backend') .
 
             # --BEHAVIOR-- packmanAdminHeader
-            dcCore::app()->callBehavior('packmanAdminHeader')
+            App::behavior()->callBehavior('packmanAdminHeader')
         );
 
         echo
@@ -311,7 +313,7 @@ class Manage extends Process
         ]) .
         Notices::GetNotices();
 
-        if (dcCore::app()->error->flag() || !$is_configured || !$is_plugins_configured || !$is_themes_configured) {
+        if (App::error()->flag() || !$is_configured || !$is_plugins_configured || !$is_themes_configured) {
             echo
             (new Div())
                 ->separator(' ')
@@ -322,13 +324,13 @@ class Manage extends Process
                 ->render();
         } else {
             Utils::modules(
-                dcCore::app()->plugins->getDefines((new Settings())->hide_distrib ? ['distributed' => false] : []),
+                App::plugins()->getDefines((new Settings())->hide_distrib ? ['distributed' => false] : []),
                 'plugins',
                 __('Installed plugins')
             );
 
             Utils::modules(
-                dcCore::app()->themes->getDefines((new Settings())->hide_distrib ? ['distributed' => false] : []),
+                App::themes()->getDefines((new Settings())->hide_distrib ? ['distributed' => false] : []),
                 'themes',
                 __('Installed themes')
             );
@@ -375,7 +377,7 @@ class Manage extends Process
         }
 
         # --BEHAVIOR-- packmanAdminTabs
-        dcCore::app()->callBehavior('packmanAdminTabs');
+        App::behavior()->callBehavior('packmanAdminTabs');
 
         Page::helpBlock('pacKman');
         Page::closeModule();
diff --git a/src/My.php b/src/My.php
index c2c5876..0c4777d 100644
--- a/src/My.php
+++ b/src/My.php
@@ -14,7 +14,7 @@ declare(strict_types=1);
 
 namespace Dotclear\Plugin\pacKman;
 
-use dcCore;
+use Dotclear\App;
 use Dotclear\Module\MyPlugin;
 
 /**
@@ -38,6 +38,6 @@ class My extends MyPlugin
 
     public static function checkCustomContext(int $context): ?bool
     {
-        return in_array($context, [My::BACKEND, My::MANAGE, My::MENU]) ? dcCore::app()->auth->isSuperAdmin() : null;
+        return in_array($context, [My::BACKEND, My::MANAGE, My::MENU]) ? App::auth()->isSuperAdmin() : null;
     }
 }
diff --git a/src/Uninstall.php b/src/Uninstall.php
index 6c28a10..e4caa89 100644
--- a/src/Uninstall.php
+++ b/src/Uninstall.php
@@ -14,7 +14,7 @@ declare(strict_types=1);
 
 namespace Dotclear\Plugin\pacKman;
 
-use dcCore;
+use Dotclear\App;
 use Dotclear\Core\Process;
 use Dotclear\Plugin\Uninstaller\Uninstaller;
 
@@ -27,7 +27,7 @@ class Uninstall extends Process
 
     public static function process(): bool
     {
-        if (!self::status() || !dcCore::app()->plugins->moduleExists('Uninstaller')) {
+        if (!self::status() || !App::plugins()->moduleExists('Uninstaller')) {
             return false;
         }
 
diff --git a/src/Utils.php b/src/Utils.php
index 1e3efac..2f2420d 100644
--- a/src/Utils.php
+++ b/src/Utils.php
@@ -14,7 +14,7 @@ declare(strict_types=1);
 
 namespace Dotclear\Plugin\pacKman;
 
-use dcCore;
+use Dotclear\App;
 use Dotclear\Helper\Date;
 use Dotclear\Helper\File\Files;
 use Dotclear\Helper\File\Path;
@@ -45,37 +45,37 @@ class Utils
 
     public static function getThemesPath(): string
     {
-        return (string) dcCore::app()->blog?->themes_path;
+        return App::blog()->themesPath();
     }
 
     public static function isConfigured(string $repo, string $file_a, string $file_b): bool
     {
         sleep(1);
         if (!is_writable($repo)) {
-            dcCore::app()->error->add(
+            App::error()->add(
                 __('Path to repository is not writable.')
             );
         }
 
         if (empty($file_a)) {
-            dcCore::app()->error->add(
+            App::error()->add(
                 __('You must specify the name of package to export.')
             );
         }
 
         if (!is_writable(dirname($repo . DIRECTORY_SEPARATOR . $file_a))) {
-            dcCore::app()->error->add(
+            App::error()->add(
                 __('Path to first export package is not writable.')
             );
         }
 
         if (!empty($file_b) && !is_writable(dirname($repo . DIRECTORY_SEPARATOR . $file_b))) {
-            dcCore::app()->error->add(
+            App::error()->add(
                 __('Path to second export package is not writable.')
             );
         }
 
-        return !dcCore::app()->error->flag();
+        return !App::error()->flag();
     }
 
     public static function isWritable(string $path, string $file): bool
@@ -209,7 +209,7 @@ class Utils
         if (str_contains($type, 'repository')) {
             $helpers_addon[] = (new Link())
                 ->class('button')
-                ->href(dcCore::app()->adminurl?->get('admin.plugin.' . My::id(), ['purge' => 1]) . '#packman-repository-' . $type)
+                ->href(App::backend()->url->get('admin.plugin.' . My::id(), ['purge' => 1]) . '#packman-repository-' . $type)
                 ->text(__('Select non lastest versions'))
             ;
         }
@@ -257,7 +257,7 @@ class Utils
                             (new Text('a', Html::escapeHTML(basename($module->get('root')))))
                                 ->class('packman-download')
                                 ->extra(
-                                    'href="' . dcCore::app()->adminurl?->get('admin.plugin.' . My::id(), [
+                                    'href="' . App::backend()->url->get('admin.plugin.' . My::id(), [
                                         'package' => basename($module->get('root')),
                                         'repo'    => $type,
                                     ]) . '"'
diff --git a/src/Zip.php b/src/Zip.php
index 42ed6f8..1c14aa5 100644
--- a/src/Zip.php
+++ b/src/Zip.php
@@ -25,14 +25,14 @@ class Zip extends \Dotclear\Helper\File\Zip\Zip
     /**
      * Replace clearbricks fileZip::writeFile
      *
-     * @param      string    $name   The name
-     * @param      string    $file   The file
-     * @param      string    $size   The size
-     * @param      int|null  $mtime  The mtime
+     * @param      string     $name   The name
+     * @param      string     $file   The file
+     * @param      float|int  $size   The size
+     * @param      float|int  $mtime  The mtime
      *
      * @return     void
      */
-    protected function writeFile($name, $file, $size, $mtime)
+    protected function writeFile(string $name, string $file, int|float $size, int|float $mtime): void
     {
         if (!isset($this->entries[$name])) {
             return;