diff --git a/Gemfile b/Gemfile
index eb405d930106eb8d72f93b43e9f1d833d8c4f8e6..0b289e72560bd454cbbfa41592109e1c88360ff9 100644
--- a/Gemfile
+++ b/Gemfile
@@ -31,6 +31,7 @@ group :test do
   end
 
   platforms :jruby do
+    gem 'jdbc-mysql'
     gem 'jdbc-sqlite3'
     gem 'activerecord-jdbcpostgresql-adapter'
   end
diff --git a/gemfiles/Gemfile.ruby1.9.3 b/gemfiles/Gemfile.ruby1.9.3
index 145478407bcf3be91b8c25f9ed99c51f418d4ffd..90e93989e92837f2158c130d6f51abb3a9e3015f 100644
--- a/gemfiles/Gemfile.ruby1.9.3
+++ b/gemfiles/Gemfile.ruby1.9.3
@@ -8,6 +8,8 @@ group :development, :test do
   gem 'rubyzip'
   gem 'rails'
   gem 'sqlite3'
+  gem 'pg'
+  gem 'mysql2'
 
   # i18n gem >=0.7.0 does not work with Ruby 1.9.2
   gem 'i18n', '0.6.1'