"To update the look" means to make changes or improvements to the appearance or style of something in order to give it a more modern or fresh look. Full definition
Build his fall wardrobe and instantly update his look with 20 days of mix and match fall outfit options. (stylechallenges.com)
This design feature is great for updating the look of a more traditional dining setting, or for adding a touch of interest to a more open or plain space. (danetti.com)