Does it work if resign the entire app bundle with an ad-hoc signature? codesign --force --deep -s - /path/to/program.app should work according to Making sure you're not a bot! Arm64 macOS refuses to run any executable without a code signature. For individual executables, the linker will generate an ad-hoc signature, but it is possible that cargo-bundle and cargo-packager are missing signing the app bundle.