We are pleased to announce the release of BioRuby 1.3.1. This new release fixes many bugs existed in 1.3.0. Here is a brief summary of changes. Refactoring of BioSQL support. Bio::PubMed bug fixes. Bio::NCBI::REST bug fixes. Bio::GCG::Msf bug fixes. Bio::Fasta::Report bug fixes and added support for multiple query sequences. Bio::Sim4::Report bug fixes. Added unit tests for Bio::GCG::Msf and Bio::Sim4::Report. License of BioRuby is clarified.