[Zope] ZopeTime in Zope 2.9.1

Hello, I've been using the product WhoOnline on zope 2.8.4 with CPS 3.3.8, now I have migrated to zope 2.9.1, cmf 1.6 and CPS 3.4 and when I try to install WhoOnline (with an external method and with CMFGenericSetup) I get an error because ZopeTime is not available. Does anybody knows how to make ZopeTime available in zope 2.9.1? Or is there any alternative product for zope 2.9.1? Thank you very much.