script enqueued in http

Hi,

I installed the plugin on one of my clients website, and needed to edit the code because the ajax library was called in http. A mixed content error was then displayed in the Dev Tools. Would it be possible to update the plugin and calling the script using “https” (https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.2/themes/smoothness/jquery-ui.css)