README.md in pgdexter-0.5.1 vs README.md in pgdexter-0.5.2

- old
+ new

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 The automatic indexer for Postgres
 
 [Read about how it works](https://ankane.org/introducing-dexter) or [watch the talk](https://www.youtube.com/watch?v=Mni_1yTaNbE)
 
-[![Build Status](https://github.com/ankane/dexter/workflows/build/badge.svg?branch=master)](https://github.com/ankane/dexter/actions)
+[![Build Status](https://github.com/ankane/dexter/actions/workflows/build.yml/badge.svg)](https://github.com/ankane/dexter/actions)
 
 ## Installation
 
 First, install [HypoPG](https://github.com/HypoPG/hypopg) on your database server. This doesn’t require a restart.