Refresh external image

[DiegoM]

Hello community

I am linking an external image of sunspots with my app, it is a fixed address and name, where the image varies over time, it can be seen that the UTC date and time vary over time. Example: https://services.swpc.noaa.gov/images/animations/sdo-hmii/latest.jpg however in my app the image is always the same, the date and time is fixed, it does not "refresh". Anyone knows how to solve this?

1- Image from the address in the internet browser

2- Image in my app

Thank you!
PS: Excuse my English google translator!