diff --git a/src/Form/Field/Image.php b/src/Form/Field/Image.php
index 67476b50..0a82f2db 100644
--- a/src/Form/Field/Image.php
+++ b/src/Form/Field/Image.php
@@ -20,7 +20,7 @@ class Image extends File
      *
      * @var string
      */
-    protected $rules = 'image';
+    protected $rules = 'image|mimes:bmp,jpg,png,jpeg,gif,svg,webp';
 
     protected function setType($type = 'image')
     {