diff --git a/Changelog.md b/Changelog.md
index 84d8436d4..e05e4568d 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,6 +1,11 @@
 ### Development
 [Full Changelog](https://github.com/rspec/rspec-rails/compare/v5.0.0...main)
 
+Enhancements:
+
+* Make the API request scaffold template more consistent and compatible with
+  Rails 6.1. (Naoto Hamada, #2484)
+
 Bug Fixes:
 
 * Limit multibyte example descriptions when used in system tests for #method_name
diff --git a/README.md b/README.md
index b5e103889..1d954585b 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@ They’re also specifications (or _specs,_ for short):
 detailed explanations of how the application is supposed to behave,
 expressed in plain English.
 
+Use **[`rspec-rails` 4.x][]** for Rails from 5.0 to 6.0.
 Use **[`rspec-rails` 3.x][]** for Rails earlier than 5.0.
 Use **[`rspec-rails` 1.x][]** for Rails 2.x.
 
@@ -21,6 +22,7 @@ Use **[`rspec-rails` 1.x][]** for Rails 2.x.
 [Ruby on Rails]: https://rubyonrails.org/
 [`rspec-rails` 1.x]: https://github.com/dchelimsky/rspec-rails
 [`rspec-rails` 3.x]: https://github.com/rspec/rspec-rails/tree/3-9-maintenance
+[`rspec-rails` 4.x]: https://github.com/rspec/rspec-rails/tree/4-1-maintenance
 
 ## Installation
 
@@ -31,7 +33,7 @@ See the [`5-0-maintenance` branch on Github](https://github.com/rspec/rspec-rail
    of your app’s `Gemfile`:
 
    ```ruby
-   # Run against the latest stable release
+   # Run against this stable release
    group :development, :test do
      gem 'rspec-rails', '~> 5.0.0'
    end