diff --git a/README.md b/README.md
index 30914f5..fc4b036 100644
--- a/README.md
+++ b/README.md
@@ -82,6 +82,7 @@ composer require appwilio/russianpost-sdk
 ```
 
 При использовании фреймворка [Laravel](https://laravel.com/) SDK автоматически регистрирует доступные сервисы.
+> Минимальная версия Laravel — 5.8.
 
 ## Логирование
 
diff --git a/composer.json b/composer.json
index 7f6d345..d1c407d 100644
--- a/composer.json
+++ b/composer.json
@@ -30,8 +30,8 @@
         "psr/log": "^1.1"
     },
     "require-dev": {
-        "illuminate/support": "5.1 - 5.8",
-        "monolog/monolog": "^1.25",
+        "illuminate/support": "^5.8|^6.0|^7.0",
+        "monolog/monolog": "^1.25|^2.0",
         "phpunit/phpunit": "^7.5",
         "symfony/var-dumper": "^4.3"
     },
diff --git a/src/LaravelServiceProvider.php b/src/LaravelServiceProvider.php
index e9943b0..8f6f0df 100644
--- a/src/LaravelServiceProvider.php
+++ b/src/LaravelServiceProvider.php
@@ -17,15 +17,14 @@
 use GuzzleHttp\Client as GuzzleClient;
 use Illuminate\Support\ServiceProvider;
 use Illuminate\Contracts\Container\Container;
+use Illuminate\Contracts\Support\DeferrableProvider;
 use Appwilio\RussianPostSDK\Tracking\PacketAccessClient;
 use Appwilio\RussianPostSDK\Tracking\SingleAccessClient;
 use Appwilio\RussianPostSDK\Dispatching\DispatchingClient;
 
-class LaravelServiceProvider extends ServiceProvider
+class LaravelServiceProvider extends ServiceProvider implements DeferrableProvider
 {
-    protected $defer = true;
-
-    public function register()
+    public function register(): void
     {
         $this->app->singleton(SingleAccessClient::class, function (Container $app) {
             $config = $app['config']['services.russianpost.tracking'];