diff --git a/composer.json b/composer.json
index 4af5fb5..02bb883 100644
--- a/composer.json
+++ b/composer.json
@@ -7,8 +7,8 @@
         "email": "hello@draperstud.io"
     }],
     "require": {
-        "php": ">=5.5.0",
-        "socialiteproviders/manager": "~1.0"
+        "php": "^5.6 || ^7.0",
+        "socialiteproviders/manager": "~2.0"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/Provider.php b/src/Provider.php
index dae9e2c..f6484f1 100644
--- a/src/Provider.php
+++ b/src/Provider.php
@@ -2,12 +2,17 @@
 
 namespace SocialiteProviders\YouTube;
 
-use Laravel\Socialite\Two\AbstractProvider;
 use Laravel\Socialite\Two\ProviderInterface;
-use Laravel\Socialite\Two\User;
+use SocialiteProviders\Manager\OAuth2\AbstractProvider;
+use SocialiteProviders\Manager\OAuth2\User;
 
 class Provider extends AbstractProvider implements ProviderInterface
 {
+    /**
+     * Unique Provider Identifier.
+     */
+    const IDENTIFIER = 'YOUTUBE';
+
     /**
      * {@inheritdoc}
      */