diff --git a/src/QueryRepository.php b/src/QueryRepository.php
index 79327af..8c1a265 100644
--- a/src/QueryRepository.php
+++ b/src/QueryRepository.php
@@ -24,6 +24,9 @@ class QueryRepository
      */
     protected $mapping;
 
+    /**
+     * @var \Rougin\Windstorm\MixedInterface
+     */
     protected $mixed = null;
 
     /**
@@ -87,6 +90,16 @@ public function first()
         return $item;
     }
 
+    /**
+     * Returns the last inserted ID.
+     *
+     * @return integer
+     */
+    public function inserted()
+    {
+        return $this->execute($this->query)->inserted();
+    }
+
     /**
      * Returns all items from the result.
      *