README.md in patch_ruby-1.2.2 vs README.md in patch_ruby-1.2.3

@@ -36,11 +36,11 @@
 ```ruby
 require 'patch_ruby'
 
 Patch.configure do |config|
   # Configure the Patch gem with your API key here
-  config.access_token = ENV['PATCH_RUBY_API_KEY']
+  config.access_token = ENV['SANDBOX_API_KEY']
 end
 ```
 
 ### Orders
 In Patch, orders represent a purchase of carbon offsets or negative emissions by mass. Place orders directly if you know the amount of carbon dioxide you would like to sequester. If you do not know how much to purchase, use an estimate.
@@ -159,10 +159,10 @@
 $ bundle install
 ```
 
 Set up required environment variables:
 ```
-$ export PATCH_RUBY_API_KEY=<SANDBOX API KEY>
+$ export SANDBOX_API_KEY=<SANDBOX API KEY>
 ```
 
 Run tests:
 ```
 $ bundle exec rspec