Gemfile in alba-0.8.0 vs Gemfile in alba-0.9.0

@@ -1,12 +1,13 @@
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in alba.gemspec
 gemspec
 
+gem 'activesupport', require: false
 gem 'coveralls', require: false
 gem 'minitest', '~> 5.0'
-gem 'oj', '~> 3.10'
+gem 'oj', '~> 3.10', platforms: :ruby
 gem 'rake', '~> 13.0'
 gem 'rubocop', '>= 0.79.0', require: false
 gem 'rubocop-minitest', '~> 0.10.1', require: false
 gem 'rubocop-performance', '~> 1.7.1', require: false
 gem 'rubocop-sensible', '~> 0.3.0', require: false