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README.md

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 # nem-ruby
 
 [![Gem Version](https://badge.fury.io/rb/nem-ruby.svg)](https://badge.fury.io/rb/nem-ruby)
-[![Build Status](https://travis-ci.org/44uk/nem-ruby.svg?branch=master)](https://travis-ci.org/44uk/nem-ruby)
+[![Ruby](https://github.com/44uk/nem-ruby/actions/workflows/ruby.yml/badge.svg?branch=main)](https://github.com/44uk/nem-ruby/actions/workflows/ruby.yml)
 [![Code Climate](https://codeclimate.com/github/44uk/nem-ruby/badges/gpa.svg)](https://codeclimate.com/github/44uk/nem-ruby)
 [![Join the chat at https://gitter.im/44uk/nem-ruby](https://badges.gitter.im/44uk/nem-ruby.svg)](https://gitter.im/44uk/nem-ruby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)