CentOS-5.7 SQLite-3.6.6 Ruby on Rails 3.1 Ruby-1.8.7

I have a situation wherein the version of SQLite-3 on CentOS-5 is too 'old' for the Ruby language sqlite3 DBMS adapter to successfully build against. I managed to obtain an rpm for ruby-1.8.7 but I cannot find one for sqlite-3.6.16 or later. Does anyone here have a lead on where such a beast, including the sqlite development headers, might be found?

I know that CentOS-6 ships with sqlite-3.6.20 but I can find nothing more recent than 3.6.6 for sqlite on CentOS-5 in the various supplemental repos that I generally use (epel and rpmforge).