Merge pull request #1148 from evaldas-leliuga/patch-1

Issue #1131 fix

src/Jenssegers/Mongodb/Eloquent/Model.php

@@ -108,7 +108,7 @@ abstract class Model extends BaseModel
      */
     public function freshTimestamp()
     {
-        return new UTCDateTime(null);
+        return new UTCDateTime(time() * 1000);
     }
 
     /**