README.md in vowpalwabbit-0.2.0 vs README.md in vowpalwabbit-0.3.0

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 # Vowpal Wabbit Ruby
 
 [Vowpal Wabbit](https://vowpalwabbit.org) - fast online machine learning - for Ruby
 
-[![Build Status](https://github.com/ankane/vowpalwabbit-ruby/workflows/build/badge.svg?branch=master)](https://github.com/ankane/vowpalwabbit-ruby/actions)
+[![Build Status](https://github.com/ankane/vowpalwabbit-ruby/actions/workflows/build.yml/badge.svg)](https://github.com/ankane/vowpalwabbit-ruby/actions)
 
 ## Installation
 
 First, install the [Vowpal Wabbit C++ library](https://vowpalwabbit.org/start.html). For Homebrew, use: