diff --git a/Api.php b/Api.php
index 862b466..1fe6774 100644
--- a/Api.php
+++ b/Api.php
@@ -32,7 +32,7 @@ class Api
      * @var ClientInterface
      */
     private $client;
-    
+
     /**
      * @param AuthInterface $auth
      */
diff --git a/Client/Client.php b/Client/Client.php
index 72b9c21..5618ab8 100644
--- a/Client/Client.php
+++ b/Client/Client.php
@@ -6,12 +6,24 @@
 
 class Client implements ClientInterface
 {
-
     /**
      * @var string
      */
     private $baseUrl = 'https://sms.ru/{method}';
 
+    /**
+     * @var \GuzzleHttp\Client
+     */
+    private $client;
+
+    /**
+     * @param array $config Additional configuration for Guzzle Client
+     */
+    public function __construct($config = [])
+    {
+        $this->client = new \GuzzleHttp\Client($config);
+    }
+
     /**
      * @param string $method
      * @param array $params
@@ -22,9 +34,7 @@ class Client implements ClientInterface
      */
     public function request($method, $params = [])
     {
-        $client = new \GuzzleHttp\Client();
-
-        $response = $client->post($this->getUrl($method), ['query' => $params]);
+        $response = $this->client->post($this->getUrl($method), ['query' => $params]);
 
         if ($response->getStatusCode() === 200) {
             return (string)$response->getBody();