diff --git a/src/Jenssegers/Mongodb/Model.php b/src/Jenssegers/Mongodb/Model.php
index fc75f4c694256ee0f2d345890b693af4dae3266c..76a238bcfc1e051594e92651b166aeca593f6977 100644
--- a/src/Jenssegers/Mongodb/Model.php
+++ b/src/Jenssegers/Mongodb/Model.php
@@ -24,6 +24,13 @@ abstract class Model extends \Illuminate\Database\Eloquent\Model {
      */
     protected $primaryKey = '_id';
 
+    /**
+     * The connection resolver instance.
+     *
+     * @var \Illuminate\Database\ConnectionResolverInterface
+     */
+    protected static $resolver;
+
     /**
      * Convert a DateTime to a storable string.
      *