Apparently Apple are switching out the tools used for notarizing things, so we need to adapt to the new way of doing things. We got this warning from Apple: > We’re reaching out because you recently used the altool command-line utility > to notarize your macOS software with Apple. As announced last year at WWDC22, > if you’re still using altool with the Apple notary service, you should > transition to the notarytool command-line utility as soon as possible. > Notarizing software with altool was deprecated in Xcode 13, and the Apple > notary service will no longer accept uploads from altool as of November 1, > 2023. Existing notarized software will continue to function properly. > > For information on notarizing your apps, read TechNote TN3147: Migrating to > the latest notarization tool.