diff --git a/README.md b/README.md
index 31deb2c..4f49d33 100644
--- a/README.md
+++ b/README.md
@@ -9,11 +9,11 @@ Powerful package for handling roles and permissions in Laravel 5 (5.1 and also 5
     - [HasRoleAndPermission Trait And Contract](#hasroleandpermission-trait-and-contract)
 - [Usage](#usage)
     - [Creating Roles](#creating-roles)
-    - [Attaching And Detaching Roles](#attaching-and-detaching-roles)
+    - [Attaching, Detaching and Syncing Roles](#attaching-detaching-and-syncing-roles)
     - [Checking For Roles](#checking-for-roles)
     - [Levels](#levels)
     - [Creating Permissions](#creating-permissions)
-    - [Attaching And Detaching Permissions](#attaching-and-detaching-permissions)
+    - [Attaching, Detaching and Syncing Permissions](#attaching-detaching-and-syncing-permissions)
     - [Checking For Permissions](#checking-for-permissions)
     - [Permissions Inheriting](#permissions-inheriting)
     - [Entity Check](#entity-check)
@@ -53,14 +53,14 @@ Add the package to your application service providers in `config/app.php` file.
 
 ```php
 'providers' => [
-    
+
     /*
      * Laravel Framework Service Providers...
      */
     Illuminate\Foundation\Providers\ArtisanServiceProvider::class,
     Illuminate\Auth\AuthServiceProvider::class,
     ...
-    
+
     /**
      * Third Party Service Providers...
      */
@@ -119,7 +119,7 @@ $moderatorRole = Role::create([
 
 > Because of `Slugable` trait, if you make a mistake and for example leave a space in slug parameter, it'll be replaced with a dot automatically, because of `str_slug` function.
 
-### Attaching And Detaching Roles
+### Attaching, Detaching and Syncing Roles
 
 It's really simple. You fetch a user from database and call `attachRole` method. There is `BelongsToMany` relationship between `User` and `Role` model.
 
@@ -129,11 +129,9 @@ use App\User;
 $user = User::find($id);
 
 $user->attachRole($adminRole); // you can pass whole object, or just an id
-```
-
-```php
 $user->detachRole($adminRole); // in case you want to detach role
 $user->detachAllRoles(); // in case you want to detach all roles
+$user->syncRoles($roles); // you can pass Eloquent collection, or just an array of ids
 ```
 
 ### Checking For Roles
@@ -157,7 +155,7 @@ if ($user->isAdmin()) {
 And of course, there is a way to check for multiple roles:
 
 ```php
-if ($user->is('admin|moderator')) { 
+if ($user->is('admin|moderator')) {
     /*
     | Or alternatively:
     | $user->is('admin, moderator'), $user->is(['admin', 'moderator']),
@@ -181,7 +179,7 @@ if ($user->is('admin|moderator', true)) {
 ### Levels
 
 When you are creating roles, there is optional parameter `level`. It is set to `1` by default, but you can overwrite it and then you can do something like this:
- 
+
 ```php
 if ($user->level() > 4) {
     //
@@ -211,7 +209,7 @@ $deleteUsersPermission = Permission::create([
 ]);
 ```
 
-### Attaching And Detaching Permissions
+### Attaching, Detaching and Syncing Permissions
 
 You can attach permissions to a role or directly to a specific user (and of course detach them as well).
 
@@ -229,9 +227,11 @@ $user->attachPermission($deleteUsersPermission); // permission attached to a use
 ```php
 $role->detachPermission($createUsersPermission); // in case you want to detach permission
 $role->detachAllPermissions(); // in case you want to detach all permissions
+$role->syncPermissions($permissions); // you can pass Eloquent collection, or just an array of ids
 
 $user->detachPermission($deleteUsersPermission);
 $user->detachAllPermissions();
+$user->syncPermissions($permissions); // you can pass Eloquent collection, or just an array of ids
 ```
 
 ### Checking For Permissions
diff --git a/src/Bican/Roles/Contracts/HasRoleAndPermission.php b/src/Bican/Roles/Contracts/HasRoleAndPermission.php
index 4286e27..fd01f65 100644
--- a/src/Bican/Roles/Contracts/HasRoleAndPermission.php
+++ b/src/Bican/Roles/Contracts/HasRoleAndPermission.php
@@ -76,6 +76,14 @@ public function detachRole($role);
      */
     public function detachAllRoles();
 
+    /**
+     * Sync roles for a user.
+     *
+     * @param array|\Bican\Roles\Models\Role[]|\Illuminate\Database\Eloquent\Collection $roles
+     * @return array
+     */
+    public function syncRoles($roles);
+
     /**
      * Get role level of a user.
      *
@@ -170,4 +178,12 @@ public function detachPermission($permission);
      * @return int
      */
     public function detachAllPermissions();
+
+    /**
+     * Sync permissions for a user.
+     *
+     * @param array|\Bican\Roles\Models\Permission[]|\Illuminate\Database\Eloquent\Collection $permissions
+     * @return array
+     */
+    public function syncPermissions($permissions);
 }
diff --git a/src/Bican/Roles/Contracts/RoleHasRelations.php b/src/Bican/Roles/Contracts/RoleHasRelations.php
index 7227329..2db21a9 100644
--- a/src/Bican/Roles/Contracts/RoleHasRelations.php
+++ b/src/Bican/Roles/Contracts/RoleHasRelations.php
@@ -40,4 +40,12 @@ public function detachPermission($permission);
      * @return int
      */
     public function detachAllPermissions();
+
+    /**
+     * Sync permissions for a role.
+     *
+     * @param array|\Bican\Roles\Models\Permission[]|\Illuminate\Database\Eloquent\Collection $permissions
+     * @return array
+     */
+    public function syncPermissions($permissions);
 }
diff --git a/src/Bican/Roles/Traits/HasRoleAndPermission.php b/src/Bican/Roles/Traits/HasRoleAndPermission.php
index 840cc1c..01f1689 100644
--- a/src/Bican/Roles/Traits/HasRoleAndPermission.php
+++ b/src/Bican/Roles/Traits/HasRoleAndPermission.php
@@ -141,6 +141,19 @@ public function detachAllRoles()
         return $this->roles()->detach();
     }
 
+    /**
+     * Sync roles for a user.
+     *
+     * @param array|\Bican\Roles\Models\Role[]|\Illuminate\Database\Eloquent\Collection $roles
+     * @return array
+     */
+    public function syncRoles($roles)
+    {
+        $this->roles = null;
+
+        return $this->roles()->sync($roles);
+    }
+
     /**
      * Get role level of a user.
      *
@@ -327,10 +340,23 @@ public function detachPermission($permission)
     public function detachAllPermissions()
     {
         $this->permissions = null;
-        
+
         return $this->userPermissions()->detach();
     }
 
+    /**
+     * Sync permissions for a user.
+     *
+     * @param array|\Bican\Roles\Models\Permission[]|\Illuminate\Database\Eloquent\Collection $permissions
+     * @return array
+     */
+    public function syncPermissions($permissions)
+    {
+        $this->permissions = null;
+
+        return $this->userPermissions()->sync($permissions);
+    }
+
     /**
      * Check if pretend option is enabled.
      *
diff --git a/src/Bican/Roles/Traits/RoleHasRelations.php b/src/Bican/Roles/Traits/RoleHasRelations.php
index 16cc7c8..2fa50c4 100644
--- a/src/Bican/Roles/Traits/RoleHasRelations.php
+++ b/src/Bican/Roles/Traits/RoleHasRelations.php
@@ -55,4 +55,15 @@ public function detachAllPermissions()
     {
         return $this->permissions()->detach();
     }
+
+    /**
+     * Sync permissions for a role.
+     *
+     * @param array|\Bican\Roles\Models\Permission[]|\Illuminate\Database\Eloquent\Collection $permissions
+     * @return array
+     */
+    public function syncPermissions($permissions)
+    {
+        return $this->permissions()->sync($permissions);
+    }
 }