To update HP printer drivers on Mac, start by connecting your printer to the computer and ensuring it's powered on. Then, navigate to the Apple menu and select "System Preferences." Choose "Printers & Scanners" and select your HP printer from the list. Click on the "Options & Supplies" button, followed by "Utility." In the utility window, click on "Open Printer Utility" and then select "Supplies." Finally, click on "Check for Update" to search for and install any available driver updates. This process ensures your HP printer drivers are up to date, enhancing performance and compatibility with your Mac system.