3.4.5 Enterprise License File about to expire

I’m currently running Openfire Enterprise 3.4.5. We paid for the license last year, and now it’s about to expire in 29 days.

I understand the new version in now open source, but we do not have the staffing availbe right now to test and upgrade to the latest version.

We’ll upgrade eventually, but until then, since it’s open source anyway, are there license files available that will not expire? That would get me out of this jam without forcing me to upgrade now without appropriate testing.