README.adoc in asciidoctor-fb2-0.4.0 vs README.adoc in asciidoctor-fb2-0.5.0

@@ -5,9 +5,10 @@
 :slug: asciidoctor/{project-handle}
 :uri-project: https://github.com/{slug}
 :uri-ci: {uri-project}/actions?query=branch%3Amaster
 :uri-gem: https://rubygems.org/gems/{project-handle}
 
+image:https://img.shields.io/badge/zulip-join_chat-brightgreen.svg[project chat,link=https://asciidoctor.zulipchat.com/]
 image:https://img.shields.io/gem/v/{project-handle}.svg[Latest Release,link={uri-gem}]
 image:{uri-project}/workflows/CI/badge.svg?branch=master[Build Status,link={uri-ci}]
 
 {project-name} is an Asciidoctor extension for converting AsciiDoc documents directly to the FB2 e-book format.