README.md in spree-4.2.0.rc1 vs README.md in spree-4.2.0.rc2

@@ -65,10 +65,10 @@
 #### Rails 6.0
 
 ```ruby
 gem 'spree', '~> 4.1'
 gem 'spree_auth_devise', '~> 4.2'
-gem 'spree_gateway', '~> 3.7'
+gem 'spree_gateway', '~> 3.9'
 ```
 
 #### Rails 5.2
 
 ```ruby