You can download the right binary from the release page and simply copy it to `/usr/local/bin` or whatever path you prefer. Autoupdates will still work.
### Brew
In the pipeline, see the [issue](https://github.com/cupcakearmy/autorestic/issues/58) for status.
### AUR
If you are on Arch there is an [AUR Package](https://aur.archlinux.org/packages/autorestic-bin/) by @n194.