Get the upgrade
Once you have a backup, get macOS Sierra from the Mac App Store.
More macOS Sierra resources
Find more topics for macOS Sierra, such as information on printer and scanner compatibility, and other featured topics.
See what's new
macOS Sierra is full of smart new features to help you enjoy
and use your Mac more efficiently than ever.
Get your photos on all of your devices, manage your collection, and edit and share your photos.Universal Clipboard
When your devices are near each other, you can copy content from one device, and paste it on another device — even in a different app.Optimized Storage
macOS Sierra can automatically store rarely used files in the cloud. So there’s always room on your Mac for new files and anything you’ve recently used.