README.md in stellar-sdk-0.23.0 vs README.md in stellar-sdk-0.23.1

@@ -9,17 +9,14 @@
 
 Add this lines to your application's Gemfile:
 
 ```ruby
 gem 'stellar-sdk'
-gem 'xdr', git: 'https://github.com/stellar/ruby-xdr.git', tag: 'v3.0.1'
 ```
 
 And then execute:
 
     $ bundle
-    
-**Note** we need to add such explicit `xdr` dependency, because version 3.0.1 is not on RubyGems yet. When it's published, you can remove this line
 
 Also requires libsodium. Installable via `brew install libsodium` on OS X.
 
 ## Usage