diff --git a/src/DotpayApi/Client.php b/src/DotpayApi/Client.php
index 674f800..4c69992 100644
--- a/src/DotpayApi/Client.php
+++ b/src/DotpayApi/Client.php
@@ -27,7 +27,7 @@ public function makeRequest(IRequest $request)
                 $this->password
             ],
             'headers' => ['content-type' => 'application/json', 'Accept' => 'application/json'],
-            'json' => $request->toArray()
+            'body' => json_encode($request->toArray(), 320)
         ];
         return json_decode($this->client->request($request->method(),$this->base_url.$request->path(), $options)->getBody());
     }