Fixed dependency version

composer.json

@@ -23,7 +23,7 @@
     },
     "require": {
         "php": ">=5.4",
-        "thephpleague/oauth2-server": "4.0.*"
+        "league/oauth2-server": "4.0.x-dev"
     },
     "autoload": {
         "psr-4": {

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "76708e9b1bd8a87135b6c5b4c0e38a2a",
+    "hash": "f919c496ec07285f990ccb4efab8cf18",
     "packages": [
         {
             "name": "league/event",
@@ -1434,6 +1434,7 @@
     "aliases": [],
     "minimum-stability": "dev",
     "stability-flags": {
+        "league/oauth2-server": 20,
         "phpunit/phpunit": 20,
         "satooshi/php-coveralls": 20
     },