diff --git a/src/Client.php b/src/Client.php
index 94769c0..892e281 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -4,18 +4,22 @@
 
 namespace Bunny\Storage;
 
+use GuzzleHttp\Client as HttpClient;
+use GuzzleHttp\Promise\Utils as PromiseUtils;
+use Psr\Http\Message\ResponseInterface;
+
 class Client
 {
     private string $apiAccessKey;
     private string $storageZoneName;
     private string $baseUrl;
-    private \GuzzleHttp\Client $httpClient;
+    private HttpClient $httpClient;
 
     public function __construct(
         string $apiKey,
         string $storageZoneName,
         string $storageZoneRegion = Region::FALKENSTEIN,
-        ?\GuzzleHttp\Client $httpClient = null
+        ?HttpClient $httpClient = null
     ) {
         if (!isset(Region::LIST[$storageZoneRegion])) {
             throw new InvalidRegionException();
@@ -25,7 +29,7 @@ public function __construct(
         $this->storageZoneName = $storageZoneName;
         $this->baseUrl = Region::getBaseUrl($storageZoneRegion);
 
-        $this->httpClient = $httpClient ?? new \GuzzleHttp\Client([
+        $this->httpClient = $httpClient ?? new HttpClient([
             'allow_redirects' => false,
             'http_errors' => false,
             'base_uri' => $this->baseUrl,
@@ -259,10 +263,10 @@ public function deleteMultiple(array $to_delete): array
             $requests[$path] = $this->httpClient->requestAsync('DELETE', $this->normalizePath($path, $isDirectory));
         }
 
-        $results = \GuzzleHttp\Promise\Utils::unwrap($requests);
+        $results = PromiseUtils::unwrap($requests);
         $errors = [];
 
-        /** @var \Psr\Http\Message\ResponseInterface $response */
+        /** @var ResponseInterface $response */
         foreach ($results as $path => $response) {
             if (200 !== $response->getStatusCode()) {
                 $data = json_decode($response->getBody()->getContents(), true);