How to make sure Microsoft teams reloads website in teams channel tab every time it is updated?

Question

For monitoring purposes I created a website (with ip restriction) that I added to a tab in a Microsoft teams channgel. So far so good. However, every time I update the website, the updated one is not shown in the teams tab. It just sticks with the first version of the website. I guess this is due to caching. Is there a way to disable caching in a teams tab? Or is there a way to make teams check if there is a newer version of the website before displaying it every time the channel tab is visited?

Many thanks in advance!