Gemfile in shoulda-callback-matchers-1.1.1 vs Gemfile in shoulda-callback-matchers-1.1.2

@@ -1,14 +1,16 @@
 source 'http://rubygems.org'
 
 gemspec
 
 # For test Rails application
-gem 'sqlite3', :platform => :ruby
+gem 'sqlite3',                          platform: :ruby
 
 # Can't wrap in platform :jruby do...end block because appraisal doesn't support
 # it
-gem 'activerecord-jdbc-adapter',        :platform => :jruby
-gem 'activerecord-jdbcsqlite3-adapter', :platform => :jruby
-gem 'jdbc-sqlite3',                     :platform => :jruby
-gem 'jruby-openssl',                    :platform => :jruby
-gem 'therubyrhino',                     :platform => :jruby
+gem 'activerecord-jdbc-adapter',        platform: :jruby
+gem 'activerecord-jdbcsqlite3-adapter', platform: :jruby
+gem 'jdbc-sqlite3',                     platform: :jruby
+gem 'jruby-openssl',                    platform: :jruby
+gem 'therubyrhino',                     platform: :jruby
+
+gem 'psych',                            platform: :rbx