diff --git a/composer.json b/composer.json
index 0837483..8b6b21c 100644
--- a/composer.json
+++ b/composer.json
@@ -12,6 +12,6 @@
     },
     "require-dev": {
         "phpunit/phpunit": "~4.5",
-        "guzzlehttp/guzzle": "5.2.0"
+        "guzzlehttp/guzzle": "5.3.4"
     }
 }
diff --git a/composer.lock b/composer.lock
index 35a3777..e1fbde4 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,10 +1,10 @@
 {
     "_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#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "hash": "87a0b5c8f7f6797421fc085ad3d6c4f0",
+    "content-hash": "09a254a1575d6aa0bfcd3f032dd688a9",
     "packages": [
         {
             "name": "netresearch/jsonmapper",
@@ -43,7 +43,7 @@
                 }
             ],
             "description": "Map nested JSON structures onto PHP classes",
-            "time": "2015-01-08 14:43:41"
+            "time": "2015-01-08T14:43:41+00:00"
         },
         {
             "name": "phly/http",
@@ -95,7 +95,7 @@
             "keywords": [
                 "http"
             ],
-            "time": "2015-03-29 22:09:47"
+            "time": "2015-03-29T22:09:47+00:00"
         },
         {
             "name": "psr/http-message",
@@ -141,7 +141,7 @@
                 "request",
                 "response"
             ],
-            "time": "2015-03-18 22:07:07"
+            "time": "2015-03-18T22:07:07+00:00"
         }
     ],
     "packages-dev": [
@@ -197,37 +197,32 @@
                 "constructor",
                 "instantiate"
             ],
-            "time": "2014-10-13 12:58:55"
+            "time": "2014-10-13T12:58:55+00:00"
         },
         {
             "name": "guzzlehttp/guzzle",
-            "version": "5.2.0",
+            "version": "5.3.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/guzzle.git",
-                "reference": "475b29ccd411f2fa8a408e64576418728c032cfa"
+                "reference": "b87eda7a7162f95574032da17e9323c9899cb6b2"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/475b29ccd411f2fa8a408e64576418728c032cfa",
-                "reference": "475b29ccd411f2fa8a408e64576418728c032cfa",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/b87eda7a7162f95574032da17e9323c9899cb6b2",
+                "reference": "b87eda7a7162f95574032da17e9323c9899cb6b2",
                 "shasum": ""
             },
             "require": {
-                "guzzlehttp/ringphp": "~1.0",
-                "php": ">=5.4.0"
+                "guzzlehttp/ringphp": "^1.1",
+                "php": ">=5.4.0",
+                "react/promise": "^2.2"
             },
             "require-dev": {
                 "ext-curl": "*",
-                "phpunit/phpunit": "~4.0",
-                "psr/log": "~1.0"
+                "phpunit/phpunit": "^4.0"
             },
             "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "5.0-dev"
-                }
-            },
             "autoload": {
                 "psr-4": {
                     "GuzzleHttp\\": "src/"
@@ -255,20 +250,24 @@
                 "rest",
                 "web service"
             ],
-            "time": "2015-01-28 01:03:29"
+            "support": {
+                "issues": "https://github.com/guzzle/guzzle/issues",
+                "source": "https://github.com/guzzle/guzzle/tree/5.3"
+            },
+            "time": "2019-10-30T09:32:00+00:00"
         },
         {
             "name": "guzzlehttp/ringphp",
-            "version": "1.0.7",
+            "version": "1.1.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/RingPHP.git",
-                "reference": "52d868f13570a9a56e5fce6614e0ec75d0f13ac2"
+                "reference": "5e2a174052995663dd68e6b5ad838afd47dd615b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/RingPHP/zipball/52d868f13570a9a56e5fce6614e0ec75d0f13ac2",
-                "reference": "52d868f13570a9a56e5fce6614e0ec75d0f13ac2",
+                "url": "https://api.github.com/repos/guzzle/RingPHP/zipball/5e2a174052995663dd68e6b5ad838afd47dd615b",
+                "reference": "5e2a174052995663dd68e6b5ad838afd47dd615b",
                 "shasum": ""
             },
             "require": {
@@ -286,7 +285,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0-dev"
+                    "dev-master": "1.1-dev"
                 }
             },
             "autoload": {
@@ -306,7 +305,12 @@
                 }
             ],
             "description": "Provides a simple API and specification that abstracts away the details of HTTP into a single PHP function.",
-            "time": "2015-03-30 01:43:20"
+            "support": {
+                "issues": "https://github.com/guzzle/RingPHP/issues",
+                "source": "https://github.com/guzzle/RingPHP/tree/1.1.1"
+            },
+            "abandoned": true,
+            "time": "2018-07-31T13:22:33+00:00"
         },
         {
             "name": "guzzlehttp/streams",
@@ -356,7 +360,12 @@
                 "Guzzle",
                 "stream"
             ],
-            "time": "2014-10-12 19:18:40"
+            "support": {
+                "issues": "https://github.com/guzzle/streams/issues",
+                "source": "https://github.com/guzzle/streams/tree/master"
+            },
+            "abandoned": true,
+            "time": "2014-10-12T19:18:40+00:00"
         },
         {
             "name": "phpdocumentor/reflection-docblock",
@@ -405,7 +414,7 @@
                     "email": "mike.vanriel@naenius.com"
                 }
             ],
-            "time": "2015-02-03 12:10:50"
+            "time": "2015-02-03T12:10:50+00:00"
         },
         {
             "name": "phpspec/prophecy",
@@ -465,7 +474,7 @@
                 "spy",
                 "stub"
             ],
-            "time": "2015-03-27 19:31:25"
+            "time": "2015-03-27T19:31:25+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
@@ -527,7 +536,7 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2015-01-24 10:06:35"
+            "time": "2015-01-24T10:06:35+00:00"
         },
         {
             "name": "phpunit/php-file-iterator",
@@ -572,7 +581,7 @@
                 "filesystem",
                 "iterator"
             ],
-            "time": "2013-10-10 15:34:57"
+            "time": "2013-10-10T15:34:57+00:00"
         },
         {
             "name": "phpunit/php-text-template",
@@ -616,7 +625,7 @@
             "keywords": [
                 "template"
             ],
-            "time": "2014-01-30 17:20:04"
+            "time": "2014-01-30T17:20:04+00:00"
         },
         {
             "name": "phpunit/php-timer",
@@ -660,7 +669,7 @@
             "keywords": [
                 "timer"
             ],
-            "time": "2013-08-02 07:42:54"
+            "time": "2013-08-02T07:42:54+00:00"
         },
         {
             "name": "phpunit/php-token-stream",
@@ -709,7 +718,7 @@
             "keywords": [
                 "tokenizer"
             ],
-            "time": "2015-01-17 09:51:32"
+            "time": "2015-01-17T09:51:32+00:00"
         },
         {
             "name": "phpunit/phpunit",
@@ -781,7 +790,7 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2015-03-29 09:24:05"
+            "time": "2015-03-29T09:24:05+00:00"
         },
         {
             "name": "phpunit/phpunit-mock-objects",
@@ -836,38 +845,36 @@
                 "mock",
                 "xunit"
             ],
-            "time": "2014-10-03 05:12:11"
+            "time": "2014-10-03T05:12:11+00:00"
         },
         {
             "name": "react/promise",
-            "version": "v2.2.0",
+            "version": "v2.9.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/reactphp/promise.git",
-                "reference": "365fcee430dfa4ace1fbc75737ca60ceea7eeeef"
+                "reference": "234f8fd1023c9158e2314fa9d7d0e6a83db42910"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/reactphp/promise/zipball/365fcee430dfa4ace1fbc75737ca60ceea7eeeef",
-                "reference": "365fcee430dfa4ace1fbc75737ca60ceea7eeeef",
+                "url": "https://api.github.com/repos/reactphp/promise/zipball/234f8fd1023c9158e2314fa9d7d0e6a83db42910",
+                "reference": "234f8fd1023c9158e2314fa9d7d0e6a83db42910",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.4.0"
             },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "2.0-dev"
-                }
+            "require-dev": {
+                "phpunit/phpunit": "^9.3 || ^5.7 || ^4.8.36"
             },
+            "type": "library",
             "autoload": {
-                "psr-4": {
-                    "React\\Promise\\": "src/"
-                },
                 "files": [
                     "src/functions_include.php"
-                ]
+                ],
+                "psr-4": {
+                    "React\\Promise\\": "src/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -876,11 +883,45 @@
             "authors": [
                 {
                     "name": "Jan Sorgalla",
-                    "email": "jsorgalla@googlemail.com"
+                    "email": "jsorgalla@gmail.com",
+                    "homepage": "https://sorgalla.com/"
+                },
+                {
+                    "name": "Christian Lück",
+                    "email": "christian@clue.engineering",
+                    "homepage": "https://clue.engineering/"
+                },
+                {
+                    "name": "Cees-Jan Kiewiet",
+                    "email": "reactphp@ceesjankiewiet.nl",
+                    "homepage": "https://wyrihaximus.net/"
+                },
+                {
+                    "name": "Chris Boden",
+                    "email": "cboden@gmail.com",
+                    "homepage": "https://cboden.dev/"
                 }
             ],
             "description": "A lightweight implementation of CommonJS Promises/A for PHP",
-            "time": "2014-12-30 13:32:42"
+            "keywords": [
+                "promise",
+                "promises"
+            ],
+            "support": {
+                "issues": "https://github.com/reactphp/promise/issues",
+                "source": "https://github.com/reactphp/promise/tree/v2.9.0"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/WyriHaximus",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/clue",
+                    "type": "github"
+                }
+            ],
+            "time": "2022-02-11T10:27:51+00:00"
         },
         {
             "name": "sebastian/comparator",
@@ -944,7 +985,7 @@
                 "compare",
                 "equality"
             ],
-            "time": "2015-01-29 16:28:08"
+            "time": "2015-01-29T16:28:08+00:00"
         },
         {
             "name": "sebastian/diff",
@@ -996,7 +1037,7 @@
             "keywords": [
                 "diff"
             ],
-            "time": "2014-08-15 10:29:00"
+            "time": "2014-08-15T10:29:00+00:00"
         },
         {
             "name": "sebastian/environment",
@@ -1046,7 +1087,7 @@
                 "environment",
                 "hhvm"
             ],
-            "time": "2014-10-25 08:00:45"
+            "time": "2014-10-25T08:00:45+00:00"
         },
         {
             "name": "sebastian/exporter",
@@ -1112,7 +1153,7 @@
                 "export",
                 "exporter"
             ],
-            "time": "2015-01-27 07:23:06"
+            "time": "2015-01-27T07:23:06+00:00"
         },
         {
             "name": "sebastian/global-state",
@@ -1163,7 +1204,7 @@
             "keywords": [
                 "global state"
             ],
-            "time": "2014-10-06 09:23:50"
+            "time": "2014-10-06T09:23:50+00:00"
         },
         {
             "name": "sebastian/recursion-context",
@@ -1216,7 +1257,7 @@
             ],
             "description": "Provides functionality to recursively process PHP variables",
             "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
-            "time": "2015-01-24 09:48:32"
+            "time": "2015-01-24T09:48:32+00:00"
         },
         {
             "name": "sebastian/version",
@@ -1251,7 +1292,7 @@
             ],
             "description": "Library that helps with managing the version number of Git-hosted PHP projects",
             "homepage": "https://github.com/sebastianbergmann/version",
-            "time": "2014-12-15 14:25:24"
+            "time": "2014-12-15T14:25:24+00:00"
         },
         {
             "name": "symfony/yaml",
@@ -1301,7 +1342,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "http://symfony.com",
-            "time": "2015-03-12 10:28:44"
+            "time": "2015-03-12T10:28:44+00:00"
         }
     ],
     "aliases": [],
@@ -1310,5 +1351,6 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": [],
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "2.3.0"
 }