walkthrough.md in passbase-1.2.0 vs walkthrough.md in passbase-1.3.0

- old
+ new

@@ -1,8 +1,8 @@
 1. Add Passbase's SDK gem to your Gemfile.
 
 ```rb
-gem 'passbase', '~> 1.2.0'
+gem 'passbase', '~> 1.3.0'
 ```
 
 2. Require the necessary modules in your app
 
 ```rb