diff --git a/composer.json b/composer.json
index 07fe1c6..7e52b50 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,7 @@
     },
     "require": {
         "symfony/console": "~2.4",
-        "guzzlehttp/guzzle": "~4.2"
+        "guzzlehttp/guzzle": "~6.0"
     },
     "bin": ["bin/zorgmail-addressbook-client"],
     "autoload": {
diff --git a/composer.lock b/composer.lock
index 252e113..fdae702 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,41 +1,46 @@
 {
     "_readme": [
         "This file locks the dependencies of your project to a known state",
-        "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "38aa5c38e868bc1cbc847afe2d77a846",
+    "hash": "ca31f9221269687b0fd367b76e70608b",
+    "content-hash": "598e51c6b351f415293c6f58e0728d09",
     "packages": [
         {
             "name": "guzzlehttp/guzzle",
-            "version": "dev-master",
+            "version": "6.2.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/guzzle.git",
-                "reference": "3e5712b19805d626eeeaa5592d7c401efbb09fc1"
+                "reference": "3f808fba627f2c5b69e2501217bf31af349c1427"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/3e5712b19805d626eeeaa5592d7c401efbb09fc1",
-                "reference": "3e5712b19805d626eeeaa5592d7c401efbb09fc1",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/3f808fba627f2c5b69e2501217bf31af349c1427",
+                "reference": "3f808fba627f2c5b69e2501217bf31af349c1427",
                 "shasum": ""
             },
             "require": {
-                "guzzlehttp/ringphp": "~1.0",
-                "php": ">=5.4.0"
+                "guzzlehttp/promises": "^1.0",
+                "guzzlehttp/psr7": "^1.3.1",
+                "php": ">=5.5"
             },
             "require-dev": {
                 "ext-curl": "*",
-                "phpunit/phpunit": "~4.0",
-                "psr/log": "~1.0"
+                "phpunit/phpunit": "^4.0",
+                "psr/log": "^1.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "5.0-dev"
+                    "dev-master": "6.2-dev"
                 }
             },
             "autoload": {
+                "files": [
+                    "src/functions_include.php"
+                ],
                 "psr-4": {
                     "GuzzleHttp\\": "src/"
                 }
@@ -51,7 +56,7 @@
                     "homepage": "https://github.com/mtdowling"
                 }
             ],
-            "description": "Guzzle is a PHP HTTP client library and framework for building RESTful web service clients",
+            "description": "Guzzle is a PHP HTTP client library",
             "homepage": "http://guzzlephp.org/",
             "keywords": [
                 "client",
@@ -62,34 +67,28 @@
                 "rest",
                 "web service"
             ],
-            "time": "2014-12-15 21:36:24"
+            "time": "2016-07-15 17:22:37"
         },
         {
-            "name": "guzzlehttp/ringphp",
-            "version": "1.0.5",
+            "name": "guzzlehttp/promises",
+            "version": "1.2.0",
             "source": {
                 "type": "git",
-                "url": "https://github.com/guzzle/RingPHP.git",
-                "reference": "a903f51b692427318bc813217c0e6505287e79a4"
+                "url": "https://github.com/guzzle/promises.git",
+                "reference": "c10d860e2a9595f8883527fa0021c7da9e65f579"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/RingPHP/zipball/a903f51b692427318bc813217c0e6505287e79a4",
-                "reference": "a903f51b692427318bc813217c0e6505287e79a4",
+                "url": "https://api.github.com/repos/guzzle/promises/zipball/c10d860e2a9595f8883527fa0021c7da9e65f579",
+                "reference": "c10d860e2a9595f8883527fa0021c7da9e65f579",
                 "shasum": ""
             },
             "require": {
-                "guzzlehttp/streams": "~3.0",
-                "php": ">=5.4.0",
-                "react/promise": "~2.0"
+                "php": ">=5.5.0"
             },
             "require-dev": {
-                "ext-curl": "*",
                 "phpunit/phpunit": "~4.0"
             },
-            "suggest": {
-                "ext-curl": "Guzzle will use specific adapters if cURL is present"
-            },
             "type": "library",
             "extra": {
                 "branch-alias": {
@@ -98,8 +97,11 @@
             },
             "autoload": {
                 "psr-4": {
-                    "GuzzleHttp\\Ring\\": "src/"
-                }
+                    "GuzzleHttp\\Promise\\": "src/"
+                },
+                "files": [
+                    "src/functions_include.php"
+                ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -112,24 +114,32 @@
                     "homepage": "https://github.com/mtdowling"
                 }
             ],
-            "time": "2014-12-11 05:50:32"
+            "description": "Guzzle promises library",
+            "keywords": [
+                "promise"
+            ],
+            "time": "2016-05-18 16:56:05"
         },
         {
-            "name": "guzzlehttp/streams",
-            "version": "3.0.0",
+            "name": "guzzlehttp/psr7",
+            "version": "1.3.1",
             "source": {
                 "type": "git",
-                "url": "https://github.com/guzzle/streams.git",
-                "reference": "47aaa48e27dae43d39fc1cea0ccf0d84ac1a2ba5"
+                "url": "https://github.com/guzzle/psr7.git",
+                "reference": "5c6447c9df362e8f8093bda8f5d8873fe5c7f65b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/streams/zipball/47aaa48e27dae43d39fc1cea0ccf0d84ac1a2ba5",
-                "reference": "47aaa48e27dae43d39fc1cea0ccf0d84ac1a2ba5",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/5c6447c9df362e8f8093bda8f5d8873fe5c7f65b",
+                "reference": "5c6447c9df362e8f8093bda8f5d8873fe5c7f65b",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.4.0"
+                "php": ">=5.4.0",
+                "psr/http-message": "~1.0"
+            },
+            "provide": {
+                "psr/http-message-implementation": "1.0"
             },
             "require-dev": {
                 "phpunit/phpunit": "~4.0"
@@ -137,13 +147,16 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.0-dev"
+                    "dev-master": "1.4-dev"
                 }
             },
             "autoload": {
                 "psr-4": {
-                    "GuzzleHttp\\Stream\\": "src/"
-                }
+                    "GuzzleHttp\\Psr7\\": "src/"
+                },
+                "files": [
+                    "src/functions_include.php"
+                ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -156,44 +169,42 @@
                     "homepage": "https://github.com/mtdowling"
                 }
             ],
-            "description": "Provides a simple abstraction over streams of data",
-            "homepage": "http://guzzlephp.org/",
+            "description": "PSR-7 message implementation",
             "keywords": [
-                "Guzzle",
-                "stream"
+                "http",
+                "message",
+                "stream",
+                "uri"
             ],
-            "time": "2014-10-12 19:18:40"
+            "time": "2016-06-24 23:00:38"
         },
         {
-            "name": "react/promise",
-            "version": "v2.1.0",
+            "name": "psr/http-message",
+            "version": "1.0.1",
             "source": {
                 "type": "git",
-                "url": "https://github.com/reactphp/promise.git",
-                "reference": "937b04f1b0ee8f6d180e75a0830aac778ca4bcd6"
+                "url": "https://github.com/php-fig/http-message.git",
+                "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/reactphp/promise/zipball/937b04f1b0ee8f6d180e75a0830aac778ca4bcd6",
-                "reference": "937b04f1b0ee8f6d180e75a0830aac778ca4bcd6",
+                "url": "https://api.github.com/repos/php-fig/http-message/zipball/f6561bf28d520154e4b0ec72be95418abe6d9363",
+                "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.4.0"
+                "php": ">=5.3.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.0-dev"
+                    "dev-master": "1.0.x-dev"
                 }
             },
             "autoload": {
                 "psr-4": {
-                    "React\\Promise\\": "src/"
-                },
-                "files": [
-                    "src/functions.php"
-                ]
+                    "Psr\\Http\\Message\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -201,75 +212,148 @@
             ],
             "authors": [
                 {
-                    "name": "Jan Sorgalla",
-                    "email": "jsorgalla@googlemail.com"
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
                 }
             ],
-            "description": "A lightweight implementation of CommonJS Promises/A for PHP",
-            "time": "2014-10-15 20:05:57"
+            "description": "Common interface for HTTP messages",
+            "homepage": "https://github.com/php-fig/http-message",
+            "keywords": [
+                "http",
+                "http-message",
+                "psr",
+                "psr-7",
+                "request",
+                "response"
+            ],
+            "time": "2016-08-06 14:39:51"
         },
         {
             "name": "symfony/console",
-            "version": "2.4.x-dev",
-            "target-dir": "Symfony/Component/Console",
+            "version": "v2.8.9",
             "source": {
                 "type": "git",
-                "url": "https://github.com/symfony/Console.git",
-                "reference": "39dd1c85ffdfc3c5fb008019dd027af05f64ec36"
+                "url": "https://github.com/symfony/console.git",
+                "reference": "36e62335caca8a6e909c5c5bac4a8128149911c9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/Console/zipball/39dd1c85ffdfc3c5fb008019dd027af05f64ec36",
-                "reference": "39dd1c85ffdfc3c5fb008019dd027af05f64ec36",
+                "url": "https://api.github.com/repos/symfony/console/zipball/36e62335caca8a6e909c5c5bac4a8128149911c9",
+                "reference": "36e62335caca8a6e909c5c5bac4a8128149911c9",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.3"
+                "php": ">=5.3.9",
+                "symfony/polyfill-mbstring": "~1.0"
             },
             "require-dev": {
-                "symfony/event-dispatcher": "~2.1"
+                "psr/log": "~1.0",
+                "symfony/event-dispatcher": "~2.1|~3.0.0",
+                "symfony/process": "~2.1|~3.0.0"
             },
             "suggest": {
-                "symfony/event-dispatcher": ""
+                "psr/log": "For using the console logger",
+                "symfony/event-dispatcher": "",
+                "symfony/process": ""
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.4-dev"
+                    "dev-master": "2.8-dev"
                 }
             },
             "autoload": {
-                "psr-0": {
+                "psr-4": {
                     "Symfony\\Component\\Console\\": ""
-                }
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "MIT"
             ],
             "authors": [
-                {
-                    "name": "Symfony Community",
-                    "homepage": "http://symfony.com/contributors"
-                },
                 {
                     "name": "Fabien Potencier",
                     "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
                 }
             ],
             "description": "Symfony Console Component",
-            "homepage": "http://symfony.com",
-            "time": "2014-09-22 08:51:05"
+            "homepage": "https://symfony.com",
+            "time": "2016-07-30 07:20:35"
+        },
+        {
+            "name": "symfony/polyfill-mbstring",
+            "version": "v1.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-mbstring.git",
+                "reference": "dff51f72b0706335131b00a7f49606168c582594"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/dff51f72b0706335131b00a7f49606168c582594",
+                "reference": "dff51f72b0706335131b00a7f49606168c582594",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "suggest": {
+                "ext-mbstring": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.2-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Mbstring\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill for the Mbstring extension",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "mbstring",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "time": "2016-05-18 14:26:46"
         }
     ],
     "packages-dev": [],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": {
-        "symfony/console": 20,
-        "guzzlehttp/guzzle": 20
-    },
+    "stability-flags": [],
     "prefer-stable": false,
+    "prefer-lowest": false,
     "platform": [],
     "platform-dev": []
 }
diff --git a/src/Client.php b/src/Client.php
index 7a4a6bc..6304161 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -22,8 +22,9 @@ public function search($keyword)
             $res = $client->get('https://api.zorgmail.nl/addressbook/v1/edi/?q='.$keyword.'&start='.$start.'&rows='.$rows, ['auth' =>  [$this->username, $this->password]]);
             //echo $res->getStatusCode();
             //echo $res->getHeader('content-type');
-            //echo $res->getBody();
-            $data = $res->json();
+            $json = $res->getBody();
+            $data = json_decode($json, true);
+            //$data = $res->json();
             if ($data['numFound']>0) {
                 foreach ($data['addresses'] as $row) {
                     $contact = new Contact();