diff --git a/src/Prettus/Repository/Contracts/RepositoryInterface.php b/src/Prettus/Repository/Contracts/RepositoryInterface.php
index 34fa31e0..efe2c758 100644
--- a/src/Prettus/Repository/Contracts/RepositoryInterface.php
+++ b/src/Prettus/Repository/Contracts/RepositoryInterface.php
@@ -28,6 +28,16 @@ public function lists($column, $key = null);
      */
     public function pluck($column, $key = null);
 
+    /**
+     * Sync relations
+     *
+     * @param $id
+     * @param $relation
+     * @param array $attributes
+     * @return $this
+     */
+    public function sync($relation, $attributes);
+
     /**
      * Retrieve all data of repository
      *
diff --git a/src/Prettus/Repository/Eloquent/BaseRepository.php b/src/Prettus/Repository/Eloquent/BaseRepository.php
index d730e110..c36eaaed 100644
--- a/src/Prettus/Repository/Eloquent/BaseRepository.php
+++ b/src/Prettus/Repository/Eloquent/BaseRepository.php
@@ -255,7 +255,7 @@ public function scopeQuery(\Closure $scope)
     /**
      * Retrieve data array for populate field select
      *
-     * @param string      $column
+     * @param string $column
      * @param string|null $key
      *
      * @return \Illuminate\Support\Collection|array
@@ -263,14 +263,14 @@ public function scopeQuery(\Closure $scope)
     public function lists($column, $key = null)
     {
         $this->applyCriteria();
-        
+
         return $this->model->lists($column, $key);
     }
 
     /**
      * Retrieve data array for populate field select
      * Compatible with Laravel 5.3
-     * @param string      $column
+     * @param string $column
      * @param string|null $key
      *
      * @return \Illuminate\Support\Collection|array
@@ -282,6 +282,20 @@ public function pluck($column, $key = null)
         return $this->model->pluck($column, $key);
     }
 
+    /**
+     * Sync relations
+     *
+     * @param $id
+     * @param $relation
+     * @param array $attributes
+     * @return $this
+     */
+    public function sync($relation, $attributes)
+    {
+        $this->model = $this->model->with($relation)->getRelation($relation)->sync($attributes);
+        return $this;
+    }
+
     /**
      * Retrieve all data of repository
      *
@@ -329,8 +343,8 @@ public function first($columns = ['*'])
     /**
      * Retrieve all data of repository, paginated
      *
-     * @param null   $limit
-     * @param array  $columns
+     * @param null $limit
+     * @param array $columns
      * @param string $method
      *
      * @return mixed
@@ -350,7 +364,7 @@ public function paginate($limit = null, $columns = ['*'], $method = "paginate")
     /**
      * Retrieve all data of repository, simple paginated
      *
-     * @param null  $limit
+     * @param null $limit
      * @param array $columns
      *
      * @return mixed
@@ -634,7 +648,7 @@ public function with($relations)
 
         return $this;
     }
-    
+
     /**
      * Load relation with closure
      *