How to Install / Upgrade: Apple releases security updates to macOS Tahoe, Sequoia, and Sonoma

Apple released security updates for three macOS versions today: macOS Sonoma 14.8.9, macOS Sequoia 15.7.9, and macOS Tahoe 26.6.1. The updates went out without a prior developer or public beta. Coverage of the release comes from 9to5Mac under the title Apple releases security updates to macOS Tahoe, Sequoia, and Sonoma.

To install or upgrade, open System Settings, go to General, then Software Update, and install the update that matches your current macOS line: Sonoma users should take 14.8.9, Sequoia users 15.7.9, and Tahoe users 26.6.1. Stay on your machine until the update finishes and the Mac restarts if prompted. If Software Update does not list the new build yet, check again later and confirm you are signed in with a working network connection.

Because these builds skipped beta channels, treat them as production security releases rather than experimental software, and apply them only on the matching major version. After install, open System Settings > General > About and confirm the reported version is 14.8.9, 15.7.9, or 26.6.1 as appropriate, then run a quick smoke check of login, network, and any tools you rely on daily.