I am getting this message when running my tests against RoR-3.1 .rvm/gems/ruby-1.8.7-p352/gems/activerecord-3.1.1/lib/active_record/ connection_adapters/abstract/connection_specification.rb:71:in `establish_connection'': Please install the sqlite3 adapter: `gem install activerecord-sqlite3-adapter` (sqlite3 is not part of the bundle. Add it to Gemfile.) However, I already have this in my Gemfile and this works fine with RoR-3.0.x gem ''sqlite3-ruby'', "= 1.2.5" changing this line to gem ''sqlite3-ruby'', "= 1.2.5" , :require => ''sqlite3'' and running bundle install does not resolved the problem. The host system is running CentOS-5.7 and the distribution ships with SQLite-3.3.6. The most recent versions of sqlite3-ruby do not compile against this version of SQLite3 but this is the most recent version of SQLite3 that we can obtain authorized packages for. The author of sqlite3-ruby has written that sqlite3-ruby does not, and will not, support SQLite-3.3 after version 1.2.5 . We are therefore constrained to use sqlite3-ruby 1.2.5. How can I fix this problem? -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.