Teamsite 6.7.1 SP1 and JVM

System

We are currently running Teamsite 6.5 SP3 on Windows 2003 SP1 and are looking at the upgrade to TS 6.7.1 SP1 for Windows and noticed the documentation stating JVM 1.5 is now the supported JVM to run.

My question is will TS 6.7.1 SP1 support JVM 1.4 or do I have to upgrade my clients to JVM 1.5 to use TS 6.7.1 SP1?