Description: Removing codes which fetch data from external websites at runtime.
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
           https://deveiate.org/code/pg/README_ja_md.html (Japanese)
 * clog :: link:/CHANGELOG.md
 
-[![Join the chat at https://gitter.im/ged/ruby-pg](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/ged/ruby-pg?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[Join the chat at https://gitter.im/ged/ruby-pg](https://gitter.im/ged/ruby-pg)
 
 
 ## Description
@@ -32,9 +32,9 @@ A small example usage:
 
 ## Build Status
 
-[![Build Status Github Actions](https://github.com/ged/ruby-pg/actions/workflows/source-gem.yml/badge.svg?branch=master)](https://github.com/ged/ruby-pg/actions/workflows/source-gem.yml)
-[![Binary gems](https://github.com/ged/ruby-pg/actions/workflows/binary-gems.yml/badge.svg?branch=master)](https://github.com/ged/ruby-pg/actions/workflows/binary-gems.yml)
-[![Build Status Appveyor](https://ci.appveyor.com/api/projects/status/gjx5axouf3b1wicp?svg=true)](https://ci.appveyor.com/project/ged/ruby-pg-9j8l3)
+[Build Status Github Actions](https://github.com/ged/ruby-pg/actions/workflows/source-gem.yml)
+[Binary gems](https://github.com/ged/ruby-pg/actions/workflows/binary-gems.yml)
+[Build Status Appveyor](https://ci.appveyor.com/project/ged/ruby-pg-9j8l3)
 
 
 ## Requirements