diff --git a/composer.json b/composer.json
index a97fd68..f7fccde 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
   ],
   "require": {
     "php": ">=5.3.0",
-    "firebase/php-jwt": "~3.0"
+    "firebase/php-jwt": "~5.0"
   },
   "require-dev": {
     "symfony/dotenv": "~3.0"
diff --git a/composer.lock b/composer.lock
index 54261e1..5724260 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,25 +4,28 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "3da8f2da765caa7da45ff01640d437b9",
+    "content-hash": "f3f7d10ef26d2f1592e9a55155433826",
     "packages": [
         {
             "name": "firebase/php-jwt",
-            "version": "v3.0.0",
+            "version": "v5.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/firebase/php-jwt.git",
-                "reference": "fa8a06e96526eb7c0eeaa47e4f39be59d21f16e1"
+                "reference": "9984a4d3a32ae7673d6971ea00bae9d0a1abba0e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/firebase/php-jwt/zipball/fa8a06e96526eb7c0eeaa47e4f39be59d21f16e1",
-                "reference": "fa8a06e96526eb7c0eeaa47e4f39be59d21f16e1",
+                "url": "https://api.github.com/repos/firebase/php-jwt/zipball/9984a4d3a32ae7673d6971ea00bae9d0a1abba0e",
+                "reference": "9984a4d3a32ae7673d6971ea00bae9d0a1abba0e",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.3.0"
             },
+            "require-dev": {
+                "phpunit/phpunit": " 4.8.35"
+            },
             "type": "library",
             "autoload": {
                 "psr-4": {
@@ -47,7 +50,7 @@
             ],
             "description": "A simple library to encode and decode JSON Web Tokens (JWT) in PHP. Should conform to the current spec.",
             "homepage": "https://github.com/firebase/php-jwt",
-            "time": "2015-07-22T18:31:08+00:00"
+            "time": "2017-06-27T22:17:23+00:00"
         }
     ],
     "packages-dev": [