If your Mac is still running macOS Sonoma or macOS Sequoia, the latest security updates aren’t optional. Apple released macOS Sonoma 14.8.8 and macOS Sequoia 15.7.8 on Monday, and together they patch nearly 140 security vulnerabilities. Security updates rarely come with flashy new features, but often stand out as the most important software Apple ships. The build numbers match last week’s release candidates: macOS Sonoma lands as 14.8.8 (23J620), while macOS Sequoia arrives as 15.7.8 (24G824). To download Apple’s latest macOS security upgrades, follow these simple steps:Click the  menu and head to System Settings > General > Software Update .