Releases · sparkle-project/Sparkle · GitHubのページにて、Macアプリにアップデート管理機能を提供してくれる「Sparkle 2.6.4」が公開されていました。

Changes:

• Fix app modification prompt from appearing when downloaded update overrides NSUpdateSecurityPolicy (#2593)

If your app overrides NSUpdateSecurityPolicy and doesn't require a custom policy, consider removing it.

Please also check 2.6.3, 2.6.2 - Important security fix, and 2.6.0 Further Sonoma Improvements for previous changes.