diff --git a/src/Bundle/Resources/config/local-commands.xml b/src/Bundle/Resources/config/local-commands.xml
index d7ec459..724c5cb 100644
--- a/src/Bundle/Resources/config/local-commands.xml
+++ b/src/Bundle/Resources/config/local-commands.xml
@@ -48,7 +48,7 @@
             <tag name="nanbando.server_command" server="local" command="plugins:install"/>
         </service>
 
-        <service id="nanbando.server.local.plugins_install" class="Nanbando\Core\Server\Command\Local\LocalComposerCommand">
+        <service id="nanbando.server.local.plugins_update" class="Nanbando\Core\Server\Command\Local\LocalComposerCommand">
             <argument type="service" id="input"/>
             <argument type="service" id="output"/>
             <argument type="service" id="embedded_composer"/>
diff --git a/src/Core/Config/JsonLoader.php b/src/Core/Config/JsonLoader.php
index d01b01a..3ce428b 100644
--- a/src/Core/Config/JsonLoader.php
+++ b/src/Core/Config/JsonLoader.php
@@ -5,6 +5,7 @@
 use Composer\Json\JsonFile;
 use Symfony\Component\Config\Resource\FileResource;
 use Symfony\Component\DependencyInjection\Exception\BadMethodCallException;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
 use Symfony\Component\DependencyInjection\Loader\FileLoader;
 use Webmozart\PathUtil\Path;
 
@@ -42,7 +43,7 @@ public function load($resource, string $type = null)
                     $importFilename = Path::join([dirname($path), $import]);
                 }
 
-                $this->import($importFilename, null, false, $file->getPath());
+                $this->import($importFilename, null, true, $file->getPath());
             }
 
             unset($content['imports']);
diff --git a/src/Core/Storage/LocalStorage.php b/src/Core/Storage/LocalStorage.php
index aedc23a..c0966a0 100644
--- a/src/Core/Storage/LocalStorage.php
+++ b/src/Core/Storage/LocalStorage.php
@@ -23,42 +23,42 @@ class LocalStorage implements StorageInterface
     /**
      * @var string
      */
-    private $name;
+    protected $name;
 
     /**
      * @var string
      */
-    private $environment;
+    protected $environment;
 
     /**
      * @var TemporaryFilesystemInterface
      */
-    private $temporaryFileSystem;
+    protected $temporaryFileSystem;
 
     /**
      * @var Filesystem
      */
-    private $localFilesystem;
+    protected $localFilesystem;
 
     /**
      * @var string
      */
-    private $localDirectory;
+    protected $localDirectory;
 
     /**
      * @var Filesystem
      */
-    private $remoteFilesystem;
+    protected $remoteFilesystem;
 
     /**
      * @var SlugifyInterface
      */
-    private $slugify;
+    protected $slugify;
 
     /**
      * @var SymfonyFilesystem
      */
-    private $filesystem;
+    protected $filesystem;
 
     /**
      * @param string $name
@@ -96,13 +96,13 @@ public function __construct(
     public function start()
     {
         $filename = $this->temporaryFileSystem->createTemporaryFile();
-        $filesystem = new Filesystem($this->createZipAdapter($filename));
+        $filesystem = new Filesystem($this->createBackupAdapter($filename));
         $filesystem->addPlugin(new ListFiles());
 
         return $filesystem;
     }
 
-    protected function createZipAdapter(string $filename): AdapterInterface
+    protected function createBackupAdapter(string $filename): AdapterInterface
     {
         return new ZipAdapter($filename);
     }
@@ -154,12 +154,17 @@ public function open($name)
             $fileName = $this->path($name);
         }
 
-        $filesystem = new Filesystem(new ReadonlyAdapter($this->createZipAdapter($fileName)));
+        $filesystem = new Filesystem($this->createRestoreAdapter($fileName));
         $filesystem->addPlugin(new ListFiles());
 
         return $filesystem;
     }
 
+    protected function createRestoreAdapter(string $filename): AdapterInterface
+    {
+        return new ReadonlyAdapter(new ZipAdapter($filename));
+    }
+
     /**
      * {@inheritdoc}
      */