Use Software Update to install updates and upgrades for macOS and its built-in apps, including Safari.

Open Software Update:

From the Apple menu (apple icon) in the corner of your screen, choose System Settings. In the window that opens, click General in the sidebar, then click Software Update on the right. (In earlier versions of macOS, choose Apple menu  > System Preferences instead, then click Software Update.)

Or use Spotlight to search for “Software Update,” then open it from the search results.

If your Mac doesn’t have Software Update, learn about other ways to download and install macOS.

Before installation begins, you’re asked to enter your administrator password. It's the password you use to log in to your Mac. Forgot your password?

Allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar or blank screen several times.

Learn what to do if an error occurs during installation or your Mac doesn’t start up all the way. 

When Software Update opens, it automatically checks for new software.

If new software is available for your Mac, click the update or upgrade button to install it.

If new software isn't available for your Mac, Software Update says that your Mac is up to date.