This is kind of a hack, but it's for your development env only, so it's Ok ;) So we are going to upgrade the Solr instance that comes pre-installed with the sunspot_solr gem. Currently its version is 1.3 and I've successfully upgraded it to the 3.5 version. This is a step-by-step about how to do it: Stop all (in all your envs) your Solr instances with the rake task bundle exec rake sunspot:solr:st
