README.md in twilio-ruby-5.27.1 vs README.md in twilio-ruby-5.28.0

- old
+ new

@@ -27,16 +27,16 @@
 ## Installation
 
 To install using [Bundler][bundler] grab the latest stable version:
 
 ```ruby
-gem 'twilio-ruby', '~> 5.27.1'
+gem 'twilio-ruby', '~> 5.28.0'
 ```
 
 To manually install `twilio-ruby` via [Rubygems][rubygems] simply gem install:
 
 ```bash
-gem install twilio-ruby -v 5.27.1
+gem install twilio-ruby -v 5.28.0
 ```
 
 To build and install the development branch yourself from the latest source:
 
 ```bash