If it's the Windows store version, follow the instructions on the download page.
If you want to update and you don't see the new version on the Store website
Search for Microsoft Store on your computer, type in BoincTasks Js and click on it, you will most likely see an update button.
If you want to update and you don't see the new version on the Store website
Search for Microsoft Store on your computer, type in BoincTasks Js and click on it, you will most likely see an update button.