GitBook: [master] one page modified

Author: damianlegawiec

upgrades/upgrades/fout-dot-two-to-four-dot-three.md

@@ -21,7 +21,7 @@ This is the safest and recommended method.
 ## Update Gemfile
 
 ```ruby
-gem 'spree', '~> 4.3'
+gem 'spree', '~> 4.3.0.rc1'
 ```
 
 ## Remove SpreeMultiDomain \(optional\)
@@ -39,23 +39,23 @@ Multi Store is now incorporated into Spree core and you cannot use that gem anym
 `spree` gem now does not include the `spree_frontend` gem anymore. If you use the default Spree Storefront you need to add it to your `Gemfile`.
 
 ```ruby
-gem 'spree_frontend'
+gem 'spree_frontend', '~> 4.3.0.rc1'
 ```
 
 ## Add `spree_backend` gem \(optional\)
 
 `spree` gem now does not include the `spree_backend` gem anymore. If you use the default Spree Admin Panel you need to add it to your `Gemfile`.
 
 ```ruby
-gem 'spree_backend'
+gem 'spree_backend', '~> 4.3.0.rc1'
 ```
 
 ## Add `spree_emails` gem \(optional\)
 
 Transactional emails once part of `spree_core` were extracted into their own gem called `spree_emails`. If you would like to still use this feature you'll need to include this new gem in your `Gemfile`.
 
 ```ruby
-gem 'spree_emails'
+gem 'spree_emails', '~> 4.3.0.rc1'
 ```
 
 ## Update gems
@@ -76,6 +76,18 @@ rails spree:install:migrations
 rails db:migrate
 ```
 
+## Upgrade Sprockets to v4
+
+In your project create  `app/assets/config/manifest.jss` file with contents: 
+
+```ruby
+//= link_tree ../images
+//= link_tree ../javascripts
+//= link_directory ../stylesheets .css
+```
+
+More [on this topic](https://github.com/rails/sprockets/blob/master/UPGRADING.md#manifestjs).
+
 ## Upgrade all of your Spree extensions to the newest versions
 
 To avoid errors and compatibility issues, please update all of your Spree extension gems to the newest versions which usually include fixes for the new Spree release, eg.