go-update: Build self-updating Go programs

Fork of inconshreveable/go-update (unmaintained since 2016).

Package update provides functionality to implement secure, self-updating Go programs (or other single-file targets) A program can update itself by replacing its executable file with a new version.

It provides the flexibility to implement different updating user experiences like auto-updating, or manual user-initiated updates. It also boasts advanced features like binary patching and code signing verification.

Example of updating from a URL:

import (
    "net/http"

    "github.com/contriboss/go-update"
)

func doUpdate(url string) error {
    resp, err := http.Get(url)
    if err != nil {
        return err
    }
    defer resp.Body.Close()
    return update.Apply(resp.Body, update.Options{})
}

Features

• Cross platform support (Windows too!)
• Binary patch application
• Checksum verification
• Code signing verification
• Support for updating arbitrary files

Installation

go get github.com/contriboss/go-update

Requires Go 1.25+.

License

Apache