diff --git a/README.md b/README.md
index 1c21f6c..9f15f0f 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 This is an [RDF.rb][] extension that provides RDF-specific [RSpec][] matchers
 and shared examples for Ruby projects that use RDF.rb and RSpec.
 
-[![Gem Version](https://badge.fury.io/rb/rdf-spec.png)](https://badge.fury.io/rb/rdf-spec)
+[![Gem Version](https://badge.fury.io/rb/rdf-spec.svg)](https://badge.fury.io/rb/rdf-spec)
 [![Build Status](https://github.com/ruby-rdf/rdf-spec/workflows/CI/badge.svg?branch=develop)](https://github.com/ruby-rdf/rdf-spec/actions?query=workflow%3ACI)
 [![Coverage Status](https://coveralls.io/repos/ruby-rdf/rdf-spec/badge.svg?branch=develop)](https://coveralls.io/github/ruby-rdf/rdf-spec?branch=develop)
 [![Gitter chat](https://badges.gitter.im/ruby-rdf/rdf.png)](https://gitter.im/ruby-rdf/rdf)