README.md in fastly-8.4.0 vs README.md in fastly-8.5.0

- old
+ new

@@ -6,10 +6,10 @@
 ## Installation
 
 To install via RubyGems, add the following to your project's `Gemfile`:
 
 ```ruby
-gem 'fastly', '~> 8.4.0'
+gem 'fastly', '~> 8.5.0'
 ```
 
 Then run `bundle install`.
 
 ## Usage