Little Snitch 5 is not compatible with macOS 27 Golden Gate. To make sure your network connection continues to work after upgrading macOS, please update or remove Little Snitch 5 first.
If you’re using macOS 14 or later: Upgrade to Little Snitch 6 before upgrading to macOS 27.
If you’re using macOS 13 or earlier: Remove Little Snitch 5 before upgrading to macOS 27. Once the macOS upgrade is complete, you can install Little Snitch 6.
If you upgrade to macOS 27 with Little Snitch 5 still installed, your network connection may stop working until Little Snitch 5 is removed.
Little Snitch 6 brings powerful new features and improvements to give you even more insight into and control over your Mac’s network activity. Highlights include enhanced blocklist support with automatic updates, system-wide DNS encryption, a redesigned Network Monitor and status menu, and more flexible ways to create, organize, and manage rules. You’ll also find new sound and Notification Center alerts, rule and blocklist usage statistics, improved filtering and search, and many other refinements throughout the app.