Member list caching problem

In my template.pt I show the fields of the users

<tr  tal:repeat="medlem view/group_users">

In the view I get the users by

usergroup = api.user.get_users(groupname=group)

How can I make sure the view/template is updated when a users info is updated?

Right now, it still shows the old info after I update a user info.
PS: All users that see the info is logged in

Plone Foundation Code of Conduct