diff --git a/public/attachment.php b/public/attachment.php
index 8f9c86c7..4d96c9bf 100644
--- a/public/attachment.php
+++ b/public/attachment.php
@@ -35,7 +35,7 @@ if ($Attach->enable_attachment())
 		$ext_l = strrpos($origfilename, ".");
 		$ext = strtolower(substr($origfilename, $ext_l+1, strlen($origfilename)-($ext_l+1)));
 		$banned_ext = array('exe', 'com', 'bat', 'msi');
-		$img_ext = array('jpeg', 'jpg', 'png', 'gif');
+		$img_ext = array('jpeg', 'jpg', 'png', 'gif', 'webp', 'bmp', 'tif', 'tiff', 'heic');
 
 		if (!$file || $filesize == 0 || $file["name"] == "") // nothing received
 		{