jquery update

Hi,
error with jquery migrate plugin

jQuery Migrate Helper — Warnings encountered
This page generated the following warnings:

https://site.com/wp-content/plugins/sharethis-share-buttons/js/admin.js: jQuery.fn.attr('selected') might use property instead of attribute
Please make sure you are using the latest version of all of your plugins, and your theme. If that is the case, then you may want to ask the developers of the code mentioned in your warnings to update it.

please update?