diff --git a/README.md b/README.md
index 21a4d5b..66e4c61 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ require 'switchbot'
 client = Switchbot::Client.new('YOUR_TOKEN', 'YOUR_SECRET')
 ```
 
-For v0.6.0 and below, refer to README-v0.6.0-and-below.md.
+For v0.6.0 and below, refer to [README-v0.6.0-and-below.md](https://github.com/ytkg/switchbot/blob/main/README-v0.6.0-and-below.md).
 
 ### Get device list
 GET https://api.switch-bot.com/v1.1/devices
@@ -114,7 +114,7 @@ To install this gem onto your local machine, run `bundle exec rake install`. To
 
 ## Contributing
 
-Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/switchbot. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [code of conduct](https://github.com/[USERNAME]/switchbot/blob/master/CODE_OF_CONDUCT.md).
+Bug reports and pull requests are welcome on GitHub at https://github.com/ytkg/switchbot. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [code of conduct](https://github.com/ytkg/switchbot/blob/master/CODE_OF_CONDUCT.md).
 
 ## License
 
@@ -122,4 +122,4 @@ The gem is available as open source under the terms of the [MIT License](https:/
 
 ## Code of Conduct
 
-Everyone interacting in the Switchbot project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the [code of conduct](https://github.com/[USERNAME]/switchbot/blob/master/CODE_OF_CONDUCT.md).
+Everyone interacting in the Switchbot project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the [code of conduct](https://github.com/ytkg/switchbot/blob/master/CODE_OF_CONDUCT.md).