We currently have serf 0.3.1 in this file. However, this version fails to build on Windows due to this problem: http://mail-archives.apache.org/mod_mbox/subversion-dev/201007.mbox/%3caanlktimjwqifcmss3b6s2gwvrkyglct2-bd6b-jiz...@mail.gmail.com%3E
Is there a particular reason we're still shipping such an ancient version of serf?