Problem with updated markdown files

Thanks for this plugin it’s very useful to write in markdown and have them appear in a WordPress post!

I’m having an issue though with getting an updated markdown file to display. Once I’ve made a live edit to a markdown file on GitHub it doesn’t appear right away on my site.

Can you tell me a little more about when exactly a change to the WordPress post occurs so that it is updated? I’ve tried visiting the front end, back end, changing plugin settings but most of the time changes to the GitHub file don’t trigger an update to the WordPress post. Any insights would be very welcome.

David