diff --git a/composer.json b/composer.json
index 642c009..77789d7 100644
--- a/composer.json
+++ b/composer.json
@@ -17,8 +17,7 @@
         "ext-gmp": "*",
         "ramsey/uuid": "^3.7",
         "guzzlehttp/guzzle": "^6.3",
-        "spomky-labs/jose": "^6.1",
-        "lcobucci/jwt": "4.0.0-alpha1"
+        "spomky-labs/jose": "^6.1"
     },
     "require-dev": {
         "phpspec/phpspec": "^4.0"
diff --git a/composer.lock b/composer.lock
index 5ee428f..c756b38 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,8 +4,8 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "6225b582cbdd72f28104d4d0ba54b350",
-    "content-hash": "8c349f0c72ef182d017765c379d938cf",
+    "hash": "954f3573fd348b939e79ad9e16ae6d97",
+    "content-hash": "f0b23ccb6f509fd6652fe6da03749585",
     "packages": [
         {
             "name": "beberlei/assert",
@@ -312,161 +312,6 @@
             ],
             "time": "2017-03-20 17:10:46"
         },
-        {
-            "name": "lcobucci/clock",
-            "version": "1.0.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/lcobucci/clock.git",
-                "reference": "bc2caa64a8a1fda18431d12c623d2059cfc667f4"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/lcobucci/clock/zipball/bc2caa64a8a1fda18431d12c623d2059cfc667f4",
-                "reference": "bc2caa64a8a1fda18431d12c623d2059cfc667f4",
-                "shasum": ""
-            },
-            "require": {
-                "php": "^7.1"
-            },
-            "require-dev": {
-                "phpunit/phpunit": "^6.1"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.0-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "Lcobucci\\Clock\\": "src"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Luís Cobucci",
-                    "email": "lcobucci@gmail.com"
-                }
-            ],
-            "description": "Yet another clock abstraction",
-            "time": "2017-05-07 19:02:47"
-        },
-        {
-            "name": "lcobucci/jose-parsing",
-            "version": "2.2.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/lcobucci/jose-parsing.git",
-                "reference": "ea0eaed79c3a5ca9ece3f824ecfe1e798fd1e1f4"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/lcobucci/jose-parsing/zipball/ea0eaed79c3a5ca9ece3f824ecfe1e798fd1e1f4",
-                "reference": "ea0eaed79c3a5ca9ece3f824ecfe1e798fd1e1f4",
-                "shasum": ""
-            },
-            "require": {
-                "php": "^7.1"
-            },
-            "require-dev": {
-                "phpmd/phpmd": "^2.3",
-                "phpunit/phpunit": "^6.0",
-                "squizlabs/php_codesniffer": "^2.3"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "2.2-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "Lcobucci\\Jose\\Parsing\\": "src"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Luís Otávio Cobucci Oblonczyk",
-                    "email": "lcobucci@gmail.com",
-                    "role": "Developer"
-                }
-            ],
-            "description": "A basic Base64Url and JSON encoding/decoding implementation",
-            "keywords": [
-                "JOSE",
-                "base64url"
-            ],
-            "time": "2017-02-12 22:14:17"
-        },
-        {
-            "name": "lcobucci/jwt",
-            "version": "4.0.0-alpha1",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/lcobucci/jwt.git",
-                "reference": "30969dac05855cf0123b2a8809c77542aba85dfa"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/lcobucci/jwt/zipball/30969dac05855cf0123b2a8809c77542aba85dfa",
-                "reference": "30969dac05855cf0123b2a8809c77542aba85dfa",
-                "shasum": ""
-            },
-            "require": {
-                "ext-openssl": "*",
-                "lcobucci/clock": "^1.0",
-                "lcobucci/jose-parsing": "~2.1",
-                "php": "^7.1"
-            },
-            "require-dev": {
-                "mdanter/ecc": "^0.4",
-                "mikey179/vfsstream": "^1.6",
-                "phpmd/phpmd": "^2.5",
-                "phpunit/php-invoker": "^1.1",
-                "phpunit/phpunit": "^6.0",
-                "squizlabs/php_codesniffer": "^2.7"
-            },
-            "suggest": {
-                "mdanter/ecc": "Required to use Elliptic Curves based algorithms."
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "4.0-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "Lcobucci\\JWT\\": "src"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "authors": [
-                {
-                    "name": "Luís Cobucci",
-                    "email": "lcobucci@gmail.com",
-                    "role": "Developer"
-                }
-            ],
-            "description": "A simple library to work with JSON Web Token and JSON Web Signature",
-            "keywords": [
-                "JWS",
-                "jwt"
-            ],
-            "time": "2017-05-07 21:25:30"
-        },
         {
             "name": "mdanter/ecc",
             "version": "v0.4.3",
@@ -2193,9 +2038,7 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": {
-        "lcobucci/jwt": 15
-    },
+    "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
diff --git a/src/Client.php b/src/Client.php
index a6d6c66..5855168 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -89,7 +89,7 @@ public function exchangeToken($jwtToken)
             $userData = $this->decrypt($userData);
         }
 
-        return new UserData($payload->userId, \GuzzleHttp\json_decode($userData));
+        return new UserData($payload->userId, \GuzzleHttp\json_decode($userData, true));
     }
 
     /**