diff --git a/Gemfile b/Gemfile
index 586373f4d..352b7d009 100644
--- a/Gemfile
+++ b/Gemfile
@@ -54,6 +54,7 @@ end
 platforms :jruby do
   # jruby-openssl is bundled with JRuby 1.7.0
   gem "jruby-openssl" if Object.const_defined?(:JRUBY_VERSION) && JRUBY_VERSION < '1.7.0'
+  gem "activerecord-jdbc-adapter", "1.2.2"
 
   group :mysql do
     gem "activerecord-jdbcmysql-adapter"