README.md in rekkyo-1.0.0 vs README.md in rekkyo-1.1.0

- old
+ new
@@ -1,13 +1,13 @@
 # Rekkyo
 
 [![Gem Version](https://badge.fury.io/rb/rekkyo.svg)](https://badge.fury.io/rb/rekkyo)
-[![Build Status](https://travis-ci.org/yujideveloper/rekkyo.svg?branch=master)](https://travis-ci.org/yujideveloper/rekkyo)
+[![Build](https://github.com/yujideveloper/rekkyo/actions/workflows/ruby.yml/badge.svg)](https://github.com/yujideveloper/rekkyo/actions/workflows/ruby.yml)
 [![Maintainability](https://api.codeclimate.com/v1/badges/37d6334cedf5b04af831/maintainability)](https://codeclimate.com/github/yujideveloper/rekkyo/maintainability)
 
 Rekkyo (列挙) is a gem for defining an enumerated type in Ruby.
 
-This gem is inspired by [`Ruby::Enum`](https://github.com/dblock/ruby-enum) and [`Enum`](https://github.com/LIQIDTechnology/enum_class).
+This gem is inspired by [`ruby-enum`](https://rubygems.org/gems/ruby-enum) and [`enum_class`](https://rubygems.org/gems/enum_class).
 
 ## Installation
 
 Add this line to your application's Gemfile:
 