diff --git a/.gitignore b/.gitignore
index ad76e4a6..0b14b805 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,6 @@ Thumbs.db
 
 # sublime phpintel plugin
 /.phpintel
+
+### CACHE ###
+.phpunit.result.cache
diff --git a/.travis.yml b/.travis.yml
index e6ddf900..abea0e36 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,15 +3,13 @@ language: php
 dist: trusty
 
 php:
-  - 5.5
-  - 5.6
-  - 7.0
-  - hhvm
+  - 7.2
+  - 7.3
 
 matrix:
   fast_finish: true
   allow_failures:
-    - php: 7.0
+    - php: 7.3
 
 before_script:
   - travis_retry composer self-update
diff --git a/README.md b/README.md
index fd95559e..81bafc41 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# ENTRUST (Laravel 5 Package)
+# ENTRUST (Laravel 6 Package)
 
 [![Build Status](https://travis-ci.org/Zizaco/entrust.svg)](https://travis-ci.org/Zizaco/entrust)
 [![Version](https://img.shields.io/packagist/v/Zizaco/entrust.svg)](https://packagist.org/packages/zizaco/entrust)
@@ -7,11 +7,14 @@
 
 [![SensioLabsInsight](https://insight.sensiolabs.com/projects/cc4af966-809b-4fbc-b8b2-bb2850e6711e/small.png)](https://insight.sensiolabs.com/projects/cc4af966-809b-4fbc-b8b2-bb2850e6711e)
 
-Entrust is a succinct and flexible way to add Role-based Permissions to **Laravel 5**.
+Entrust is a succinct and flexible way to add Role-based Permissions to **Laravel 6**.
 
 If you are looking for the Laravel 4 version, take a look [Branch 1.0](https://github.com/Zizaco/entrust/tree/1.0). It
 contains the latest entrust version for Laravel 4.
 
+If you are looking for the Laravel 5 version, take a look [Tag 1.7.0](https://github.com/Zizaco/entrust/tree/1.7.0). It
+contains the latest entrust version for Laravel 5.
+
 ## Contents
 
 - [Installation](#installation)
@@ -37,10 +40,10 @@ contains the latest entrust version for Laravel 4.
 
 ## Installation
 
-1) In order to install Laravel 5 Entrust, just add the following to your composer.json. Then run `composer update`:
+1) In order to install Laravel 6 Entrust, just add the following to your composer.json. Then run `composer update`:
 
 ```json
-"zizaco/entrust": "5.2.x-dev"
+"zizaco/entrust": "6.0.1-dev"
 ```
 
 2) Open your `config/app.php` and add the following to the `providers` array:
@@ -115,7 +118,7 @@ After the migration, four new tables will be present:
 
 #### Role
 
-Create a Role model inside `app/models/Role.php` using the following example:
+Create a Role model inside `app/Role.php` using the following example:
 
 ```php
 <?php namespace App;
@@ -136,7 +139,7 @@ Both `display_name` and `description` are optional; their fields are nullable in
 
 #### Permission
 
-Create a Permission model inside `app/models/Permission.php` using the following example:
+Create a Permission model inside `app/Permission.php` using the following example:
 
 ```php
 <?php namespace App;
@@ -515,17 +518,6 @@ If the user is not logged the return will also be `false`.
 
 ## Troubleshooting
 
-If you encounter an error when doing the migration that looks like:
-
-```
-SQLSTATE[HY000]: General error: 1005 Can't create table 'laravelbootstrapstarter.#sql-42c_f8' (errno: 150)
-    (SQL: alter table `role_user` add constraint role_user_user_id_foreign foreign key (`user_id`)
-    references `users` (`id`)) (Bindings: array ())
-```
-
-Then it's likely that the `id` column in your user table does not match the `user_id` column in `role_user`.
-Make sure both are `INT(10)`.
-
 When trying to use the EntrustUserTrait methods, you encounter the error which looks like
 
     Class name must be a valid object or a string
diff --git a/composer.json b/composer.json
index f63566d3..d3663d3b 100644
--- a/composer.json
+++ b/composer.json
@@ -22,15 +22,15 @@
         }
     ],
     "require": {
-        "php": ">=5.5.0",
-        "illuminate/console": "~5.0",
-        "illuminate/support": "~5.0",
-        "illuminate/cache": "~5.0"
+        "php": ">=7.2.0",
+        "illuminate/console": "~6.0",
+        "illuminate/support": "~6.0",
+        "illuminate/cache": "~6.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "~4.1",
+        "phpunit/phpunit": "~8.0",
         "mockery/mockery": "dev-master",
-        "illuminate/database": "~5.0",
+        "illuminate/database": "~6.0",
         "sami/sami": "dev-master"
     },
     "autoload": {
diff --git a/composer.lock b/composer.lock
index ca3102dc..7020b65e 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,24 +4,24 @@
         "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": "e6fcf53f8a08a77e7eb0af419689374f",
+    "content-hash": "2ed63887891067d7ac8a97070cf68b54",
     "packages": [
         {
             "name": "doctrine/inflector",
-            "version": "1.2.x-dev",
+            "version": "1.3.x-dev",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/inflector.git",
-                "reference": "e11d84c6e018beedd929cff5220969a3c6d1d462"
+                "reference": "45d9b132b262c1d03835cdeefd42938d881556fa"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/inflector/zipball/e11d84c6e018beedd929cff5220969a3c6d1d462",
-                "reference": "e11d84c6e018beedd929cff5220969a3c6d1d462",
+                "url": "https://api.github.com/repos/doctrine/inflector/zipball/45d9b132b262c1d03835cdeefd42938d881556fa",
+                "reference": "45d9b132b262c1d03835cdeefd42938d881556fa",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.0"
+                "php": "^7.1"
             },
             "require-dev": {
                 "phpunit/phpunit": "^6.2"
@@ -29,7 +29,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.2.x-dev"
+                    "dev-master": "1.3.x-dev"
                 }
             },
             "autoload": {
@@ -71,36 +71,38 @@
                 "singularize",
                 "string"
             ],
-            "time": "2017-07-22 12:18:28"
+            "time": "2018-06-15T19:03:38+00:00"
         },
         {
             "name": "illuminate/cache",
-            "version": "5.5.x-dev",
+            "version": "6.x-dev",
             "source": {
                 "type": "git",
                 "url": "https://github.com/illuminate/cache.git",
-                "reference": "709f1c7da68b65421b3590f5258e158232f33836"
+                "reference": "ee6306c9af2ab5d7f39707c40419b74de431fbc2"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/illuminate/cache/zipball/709f1c7da68b65421b3590f5258e158232f33836",
-                "reference": "709f1c7da68b65421b3590f5258e158232f33836",
+                "url": "https://api.github.com/repos/illuminate/cache/zipball/ee6306c9af2ab5d7f39707c40419b74de431fbc2",
+                "reference": "ee6306c9af2ab5d7f39707c40419b74de431fbc2",
                 "shasum": ""
             },
             "require": {
-                "illuminate/contracts": "5.5.*",
-                "illuminate/support": "5.5.*",
-                "php": ">=7.0"
+                "illuminate/contracts": "^6.0",
+                "illuminate/support": "^6.0",
+                "php": "^7.2"
             },
             "suggest": {
-                "illuminate/database": "Required to use the database cache driver (5.5.*).",
-                "illuminate/filesystem": "Required to use the file cache driver (5.5.*).",
-                "illuminate/redis": "Required to use the redis cache driver (5.5.*)."
+                "ext-memcached": "Required to use the memcache cache driver.",
+                "illuminate/database": "Required to use the database cache driver (^6.0).",
+                "illuminate/filesystem": "Required to use the file cache driver (^6.0).",
+                "illuminate/redis": "Required to use the redis cache driver (^6.0).",
+                "symfony/cache": "Required to PSR-6 cache bridge (^4.3.4)."
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "5.5-dev"
+                    "dev-master": "6.0-dev"
                 }
             },
             "autoload": {
@@ -120,37 +122,38 @@
             ],
             "description": "The Illuminate Cache package.",
             "homepage": "https://laravel.com",
-            "time": "2017-09-19 17:21:01"
+            "time": "2019-09-11T12:03:36+00:00"
         },
         {
             "name": "illuminate/console",
-            "version": "5.5.x-dev",
+            "version": "6.x-dev",
             "source": {
                 "type": "git",
                 "url": "https://github.com/illuminate/console.git",
-                "reference": "d49110189092cfeae5950290ead77d403aa1372d"
+                "reference": "db1781020edddd540dd4d5c86ba6ca07e085e8b5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/illuminate/console/zipball/d49110189092cfeae5950290ead77d403aa1372d",
-                "reference": "d49110189092cfeae5950290ead77d403aa1372d",
+                "url": "https://api.github.com/repos/illuminate/console/zipball/db1781020edddd540dd4d5c86ba6ca07e085e8b5",
+                "reference": "db1781020edddd540dd4d5c86ba6ca07e085e8b5",
                 "shasum": ""
             },
             "require": {
-                "illuminate/contracts": "5.5.*",
-                "illuminate/support": "5.5.*",
-                "php": ">=7.0",
-                "symfony/console": "~3.3"
+                "illuminate/contracts": "^6.0",
+                "illuminate/support": "^6.0",
+                "php": "^7.2",
+                "symfony/console": "^4.3.4",
+                "symfony/process": "^4.3.4"
             },
             "suggest": {
-                "guzzlehttp/guzzle": "Required to use the ping methods on schedules (~6.0).",
-                "mtdowling/cron-expression": "Required to use scheduling component (~1.0).",
-                "symfony/process": "Required to use scheduling component (~3.3)."
+                "dragonmantank/cron-expression": "Required to use scheduling component (^2.0).",
+                "guzzlehttp/guzzle": "Required to use the ping methods on schedules (^6.0).",
+                "illuminate/filesystem": "Required to use the generator command (^6.0)"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "5.5-dev"
+                    "dev-master": "6.0-dev"
                 }
             },
             "autoload": {
@@ -170,31 +173,31 @@
             ],
             "description": "The Illuminate Console package.",
             "homepage": "https://laravel.com",
-            "time": "2017-10-25 19:10:11"
+            "time": "2019-09-18T12:32:21+00:00"
         },
         {
             "name": "illuminate/contracts",
-            "version": "5.5.x-dev",
+            "version": "6.x-dev",
             "source": {
                 "type": "git",
                 "url": "https://github.com/illuminate/contracts.git",
-                "reference": "d9e269284eba43bd2e9e8d1f1ba12362b00ec096"
+                "reference": "403b24e356346c1cd13ad794d87ec7c57a5363bb"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/illuminate/contracts/zipball/d9e269284eba43bd2e9e8d1f1ba12362b00ec096",
-                "reference": "d9e269284eba43bd2e9e8d1f1ba12362b00ec096",
+                "url": "https://api.github.com/repos/illuminate/contracts/zipball/403b24e356346c1cd13ad794d87ec7c57a5363bb",
+                "reference": "403b24e356346c1cd13ad794d87ec7c57a5363bb",
                 "shasum": ""
             },
             "require": {
-                "php": ">=7.0",
-                "psr/container": "~1.0",
-                "psr/simple-cache": "~1.0"
+                "php": "^7.2",
+                "psr/container": "^1.0",
+                "psr/simple-cache": "^1.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "5.5-dev"
+                    "dev-master": "6.0-dev"
                 }
             },
             "autoload": {
@@ -214,41 +217,45 @@
             ],
             "description": "The Illuminate Contracts package.",
             "homepage": "https://laravel.com",
-            "time": "2017-09-19 13:09:37"
+            "time": "2019-09-18T12:32:21+00:00"
         },
         {
             "name": "illuminate/support",
-            "version": "5.5.x-dev",
+            "version": "6.x-dev",
             "source": {
                 "type": "git",
                 "url": "https://github.com/illuminate/support.git",
-                "reference": "e97328afda4d93438e3ac1891d6594fdc851f5d6"
+                "reference": "b132b6cc61df520a4d8fc3ffec01e8b3ff4e8202"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/illuminate/support/zipball/e97328afda4d93438e3ac1891d6594fdc851f5d6",
-                "reference": "e97328afda4d93438e3ac1891d6594fdc851f5d6",
+                "url": "https://api.github.com/repos/illuminate/support/zipball/b132b6cc61df520a4d8fc3ffec01e8b3ff4e8202",
+                "reference": "b132b6cc61df520a4d8fc3ffec01e8b3ff4e8202",
                 "shasum": ""
             },
             "require": {
-                "doctrine/inflector": "~1.1",
+                "doctrine/inflector": "^1.1",
+                "ext-json": "*",
                 "ext-mbstring": "*",
-                "illuminate/contracts": "5.5.*",
-                "nesbot/carbon": "^1.20",
-                "php": ">=7.0"
+                "illuminate/contracts": "^6.0",
+                "nesbot/carbon": "^2.0",
+                "php": "^7.2"
             },
-            "replace": {
-                "tightenco/collect": "self.version"
+            "conflict": {
+                "tightenco/collect": "<5.5.33"
             },
             "suggest": {
-                "illuminate/filesystem": "Required to use the composer class (5.2.*).",
-                "symfony/process": "Required to use the composer class (~3.3).",
-                "symfony/var-dumper": "Required to use the dd function (~3.3)."
+                "illuminate/filesystem": "Required to use the composer class (^6.0).",
+                "moontoast/math": "Required to use ordered UUIDs (^1.1).",
+                "ramsey/uuid": "Required to use Str::uuid() (^3.7).",
+                "symfony/process": "Required to use the composer class (^4.3.4).",
+                "symfony/var-dumper": "Required to use the dd function (^4.3.4).",
+                "vlucas/phpdotenv": "Required to use the Env class and env helper (^3.3)."
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "5.5-dev"
+                    "dev-master": "6.0-dev"
                 }
             },
             "autoload": {
@@ -271,34 +278,44 @@
             ],
             "description": "The Illuminate Support package.",
             "homepage": "https://laravel.com",
-            "time": "2017-11-10 14:22:23"
+            "time": "2019-09-18T12:32:21+00:00"
         },
         {
             "name": "nesbot/carbon",
-            "version": "dev-master",
+            "version": "2.25.0-beta.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/briannesbitt/Carbon.git",
-                "reference": "926aee5ab38c2868816aa760f862a85ad01cb61a"
+                "reference": "380e7daf0daa68f87757e4e6dbb528ab61a5eb9c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/briannesbitt/Carbon/zipball/926aee5ab38c2868816aa760f862a85ad01cb61a",
-                "reference": "926aee5ab38c2868816aa760f862a85ad01cb61a",
+                "url": "https://api.github.com/repos/briannesbitt/Carbon/zipball/380e7daf0daa68f87757e4e6dbb528ab61a5eb9c",
+                "reference": "380e7daf0daa68f87757e4e6dbb528ab61a5eb9c",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.0",
-                "symfony/translation": "~2.6 || ~3.0"
+                "ext-json": "*",
+                "php": "^7.1.8 || ^8.0",
+                "symfony/translation": "^3.4 || ^4.0"
             },
             "require-dev": {
-                "friendsofphp/php-cs-fixer": "~2",
-                "phpunit/phpunit": "~4.0 || ~5.0"
+                "friendsofphp/php-cs-fixer": "^2.14 || ^3.0",
+                "kylekatarnls/multi-tester": "^1.1",
+                "phpmd/phpmd": "dev-php-7.1-compatibility",
+                "phpstan/phpstan": "^0.11",
+                "phpunit/phpunit": "^7.5 || ^8.0",
+                "squizlabs/php_codesniffer": "^3.4"
             },
+            "bin": [
+                "bin/carbon"
+            ],
             "type": "library",
             "extra": {
-                "branch-alias": {
-                    "dev-master": "1.23-dev"
+                "laravel": {
+                    "providers": [
+                        "Carbon\\Laravel\\ServiceProvider"
+                    ]
                 }
             },
             "autoload": {
@@ -315,16 +332,20 @@
                     "name": "Brian Nesbitt",
                     "email": "brian@nesbot.com",
                     "homepage": "http://nesbot.com"
+                },
+                {
+                    "name": "kylekatarnls",
+                    "homepage": "http://github.com/kylekatarnls"
                 }
             ],
-            "description": "A simple API extension for DateTime.",
+            "description": "An API extension for DateTime that supports 281 different languages.",
             "homepage": "http://carbon.nesbot.com",
             "keywords": [
                 "date",
                 "datetime",
                 "time"
             ],
-            "time": "2017-02-06 22:02:47"
+            "time": "2019-09-13T20:03:07+00:00"
         },
         {
             "name": "psr/container",
@@ -332,12 +353,12 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-fig/container.git",
-                "reference": "2cc4a01788191489dc7459446ba832fa79a216a7"
+                "reference": "014d250daebff39eba15ba990eeb2a140798e77c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/php-fig/container/zipball/2cc4a01788191489dc7459446ba832fa79a216a7",
-                "reference": "2cc4a01788191489dc7459446ba832fa79a216a7",
+                "url": "https://api.github.com/repos/php-fig/container/zipball/014d250daebff39eba15ba990eeb2a140798e77c",
+                "reference": "014d250daebff39eba15ba990eeb2a140798e77c",
                 "shasum": ""
             },
             "require": {
@@ -373,54 +394,7 @@
                 "container-interop",
                 "psr"
             ],
-            "time": "2017-06-28 15:35:32"
-        },
-        {
-            "name": "psr/log",
-            "version": "dev-master",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/php-fig/log.git",
-                "reference": "4ebe3a8bf773a19edfe0a84b6585ba3d401b724d"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/php-fig/log/zipball/4ebe3a8bf773a19edfe0a84b6585ba3d401b724d",
-                "reference": "4ebe3a8bf773a19edfe0a84b6585ba3d401b724d",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3.0"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.0.x-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "Psr\\Log\\": "Psr/Log/"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "PHP-FIG",
-                    "homepage": "http://www.php-fig.org/"
-                }
-            ],
-            "description": "Common interface for logging libraries",
-            "homepage": "https://github.com/php-fig/log",
-            "keywords": [
-                "log",
-                "psr",
-                "psr-3"
-            ],
-            "time": "2016-10-10 12:19:37"
+            "time": "2018-12-29T15:36:03+00:00"
         },
         {
             "name": "psr/simple-cache",
@@ -468,38 +442,45 @@
                 "psr-16",
                 "simple-cache"
             ],
-            "time": "2017-10-23 01:57:42"
+            "time": "2017-10-23T01:57:42+00:00"
         },
         {
             "name": "symfony/console",
-            "version": "3.4.x-dev",
+            "version": "4.4.x-dev",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "0f859c42d6b557fdac74754c9823170765ae3872"
+                "reference": "8057f7314068c8d045feb2700a5069ed4f69e553"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/console/zipball/0f859c42d6b557fdac74754c9823170765ae3872",
-                "reference": "0f859c42d6b557fdac74754c9823170765ae3872",
+                "url": "https://api.github.com/repos/symfony/console/zipball/8057f7314068c8d045feb2700a5069ed4f69e553",
+                "reference": "8057f7314068c8d045feb2700a5069ed4f69e553",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.5.9|>=7.0.8",
-                "symfony/debug": "~2.8|~3.0|~4.0",
-                "symfony/polyfill-mbstring": "~1.0"
+                "php": "^7.1.3",
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@@ -583,50 +560,57 @@
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-                    "email": "fabien@symfony.com"
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                 }
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-            "description": "Symfony Debug Component",
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-            "time": "2017-11-11 15:39:06"
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+                "mbstring",
+                "polyfill",
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@@ -643,57 +627,171 @@
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+            "time": "2019-08-06T08:03:45+00:00"
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+            "homepage": "https://symfony.com",
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@@ -720,28 +818,88 @@
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+            "time": "2019-09-19T15:56:27+00:00"
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+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
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+                    "name": "Nicolas Grekas",
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+                    "name": "Symfony Community",
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+            "homepage": "https://symfony.com",
+            "keywords": [
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@@ -777,7 +935,7 @@
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@@ -785,26 +943,23 @@
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+                "symfony/process": "^2.5 || ^3.0 || ^4.0"
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@@ -836,36 +991,38 @@
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@@ -885,12 +1042,12 @@
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+                    "email": "sebastian@phpeople.de",
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@@ -1265,34 +1573,34 @@
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@@ -1320,43 +1628,44 @@
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@@ -1382,29 +1691,32 @@
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+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Arne Blankerts",
+                    "email": "arne@blankerts.de",
+                    "role": "Developer"
+                }
+            ],
+            "description": "A small library for converting tokenized PHP source code into XML and potentially other formats",
+            "time": "2019-06-13T22:48:21+00:00"
         },
         {
             "name": "twig/twig",
@@ -2393,27 +2955,28 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/twigphp/Twig.git",
-                "reference": "0b9a64d842bf7f15c9f3964909100a6663e97db2"
+                "reference": "c2fd9990fcab344b67a12ead04890a88141d5897"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/twigphp/Twig/zipball/0b9a64d842bf7f15c9f3964909100a6663e97db2",
-                "reference": "0b9a64d842bf7f15c9f3964909100a6663e97db2",
+                "url": "https://api.github.com/repos/twigphp/Twig/zipball/c2fd9990fcab344b67a12ead04890a88141d5897",
+                "reference": "c2fd9990fcab344b67a12ead04890a88141d5897",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.0",
-                "symfony/polyfill-mbstring": "~1.0"
+                "php": "^7.1.3",
+                "symfony/polyfill-ctype": "^1.8",
+                "symfony/polyfill-mbstring": "^1.3"
             },
             "require-dev": {
                 "psr/container": "^1.0",
-                "symfony/debug": "~2.7",
-                "symfony/phpunit-bridge": "~3.3@dev"
+                "symfony/debug": "^3.4|^4.2",
+                "symfony/phpunit-bridge": "^4.4@dev|^5.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.4-dev"
+                    "dev-master": "2.12-dev"
                 }
             },
             "autoload": {
@@ -2435,23 +2998,23 @@
                     "homepage": "http://fabien.potencier.org",
                     "role": "Lead Developer"
                 },
+                {
+                    "name": "Twig Team",
+                    "homepage": "https://twig.symfony.com/contributors",
+                    "role": "Contributors"
+                },
                 {
                     "name": "Armin Ronacher",
                     "email": "armin.ronacher@active-4.com",
                     "role": "Project Founder"
-                },
-                {
-                    "name": "Twig Team",
-                    "homepage": "http://twig.sensiolabs.org/contributors",
-                    "role": "Contributors"
                 }
             ],
             "description": "Twig, the flexible, fast, and secure template language for PHP",
-            "homepage": "http://twig.sensiolabs.org",
+            "homepage": "https://twig.symfony.com",
             "keywords": [
                 "templating"
             ],
-            "time": "2017-11-12T18:48:08+00:00"
+            "time": "2019-09-20T12:53:54+00:00"
         }
     ],
     "aliases": [],
@@ -2463,7 +3026,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": ">=5.5.0"
+        "php": ">=7.2.0"
     },
     "platform-dev": []
 }
diff --git a/phpunit.xml b/phpunit.xml
index 3347b75b..03d5e514 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -8,7 +8,7 @@
          convertWarningsToExceptions="true"
          processIsolation="false"
          stopOnFailure="false"
-         syntaxCheck="false"
+         beStrictAboutTestsThatDoNotTestAnything="false"
 >
     <testsuites>
         <testsuite name="Package Test Suite">
diff --git a/src/Entrust/Traits/EntrustUserTrait.php b/src/Entrust/Traits/EntrustUserTrait.php
index c799bbeb..7ed1a6b6 100644
--- a/src/Entrust/Traits/EntrustUserTrait.php
+++ b/src/Entrust/Traits/EntrustUserTrait.php
@@ -11,6 +11,7 @@
 use Illuminate\Cache\TaggableStore;
 use Illuminate\Support\Facades\Cache;
 use Illuminate\Support\Facades\Config;
+use Illuminate\Support\Str;
 use InvalidArgumentException;
 
 trait EntrustUserTrait
@@ -162,7 +163,7 @@ public function can($permission, $requireAll = false)
             foreach ($this->cachedRoles() as $role) {
                 // Validate against the Permission table
                 foreach ($role->cachedPermissions() as $perm) {
-                    if (str_is( $permission, $perm->name) ) {
+                    if (Str::is( $permission, $perm->name) ) {
                         return true;
                     }
                 }
diff --git a/src/views/generators/migration.blade.php b/src/views/generators/migration.blade.php
index 89e8cabd..c0dd96d5 100644
--- a/src/views/generators/migration.blade.php
+++ b/src/views/generators/migration.blade.php
@@ -25,7 +25,7 @@ public function up()
 
         // Create table for associating roles to users (Many-to-Many)
         Schema::create('{{ $roleUserTable }}', function (Blueprint $table) {
-            $table->integer('user_id')->unsigned();
+            $table->bigInteger('user_id')->unsigned();
             $table->integer('role_id')->unsigned();
 
             $table->foreign('user_id')->references('{{ $userKeyName }}')->on('{{ $usersTable }}')
diff --git a/tests/EntrustTest.php b/tests/EntrustTest.php
index f01a45c1..7bdfab5d 100644
--- a/tests/EntrustTest.php
+++ b/tests/EntrustTest.php
@@ -3,8 +3,9 @@
 use Zizaco\Entrust\Entrust;
 use Illuminate\Support\Facades\Facade;
 use Mockery as m;
+use PHPUnit\Framework\TestCase;
 
-class EntrustTest extends PHPUnit_Framework_TestCase
+class EntrustTest extends TestCase
 {
     protected $nullFilterTest;
     protected $abortFilterTest;
@@ -12,7 +13,7 @@ class EntrustTest extends PHPUnit_Framework_TestCase
 
     protected $expectedResponse;
 
-    public function setUp()
+    public function setUp(): void
     {
         $this->nullFilterTest = function($filterClosure) {
             if (!($filterClosure instanceof Closure)) {
@@ -54,7 +55,7 @@ public function setUp()
         };
     }
 
-    public function tearDown()
+    public function tearDown(): void
     {
         m::close();
     }
diff --git a/tests/EntrustUserTest.php b/tests/EntrustUserTest.php
index 8ea135b5..8d859979 100644
--- a/tests/EntrustUserTest.php
+++ b/tests/EntrustUserTest.php
@@ -8,12 +8,13 @@
 use Zizaco\Entrust\Permission;
 use Zizaco\Entrust\Role;
 use Mockery as m;
+use PHPUnit\Framework\TestCase;
 
-class EntrustUserTest extends PHPUnit_Framework_TestCase
+class EntrustUserTest extends TestCase
 {
     private $facadeMocks = array();
 
-    public function setUp()
+    public function setUp(): void
     {
         parent::setUp();
 
@@ -29,7 +30,7 @@ public function setUp()
         Cache::swap($this->facadeMocks['cache']);
     }
 
-    public function tearDown()
+    public function tearDown(): void
     {
         m::close();
     }
diff --git a/tests/Middleware/MiddlewareTest.php b/tests/Middleware/MiddlewareTest.php
index 7441fdb4..8f908155 100644
--- a/tests/Middleware/MiddlewareTest.php
+++ b/tests/Middleware/MiddlewareTest.php
@@ -1,12 +1,13 @@
 <?php
 
 use Mockery as m;
+use PHPUnit\Framework\TestCase;
 
-abstract class MiddlewareTest extends PHPUnit_Framework_TestCase
+abstract class MiddlewareTest extends TestCase
 {
 	public static $abortCode = null;
 
-	public static function setupBeforeClass()
+	public static function setupBeforeClass(): void
 	{
 		if (! function_exists('abort')) {
 		    /**
@@ -29,7 +30,7 @@ function abort($code, $message = '', array $headers = [])
 		}
 	}
 
-	public function tearDown()
+	public function tearDown(): void
 	{
 		parent::tearDown();