gemfiles/rails_4_2.gemfile in apartment-2.1.0 vs gemfiles/rails_4_2.gemfile in apartment-2.2.0

@@ -7,6 +7,17 @@
 group :local do
   gem "pry"
   gem "guard-rspec", "~> 4.2"
 end
 
+platforms :ruby do
+  gem "pg", "< 1.0.0"
+  gem "mysql2", "~> 0.4.0"
+end
+
+platforms :jruby do
+  gem "activerecord-jdbc-adapter", "~> 1.3"
+  gem "activerecord-jdbcpostgresql-adapter", "~> 1.3"
+  gem "activerecord-jdbcmysql-adapter", "~> 1.3"
+end
+
 gemspec path: "../"