app/assets/images/flags/1x1/vn.svg in flag-icons-rails-3.1.0 vs app/assets/images/flags/1x1/vn.svg in flag-icons-rails-3.4.5

@@ -1,5 +1,5 @@
-<svg xmlns="http://www.w3.org/2000/svg" id="flag-icon-css-vn" width="512" height="512">
+<svg xmlns="http://www.w3.org/2000/svg" id="flag-icon-css-vn" viewBox="0 0 512 512">
   <defs>
     <clipPath id="a">
       <path fill-opacity=".7" d="M177.2 0h708.6v708.7H177.2z"/>
     </clipPath>
   </defs>