updating from FreeBSD10-B3 to FreeBSD10-RC1

[Zenny]

Hi:

I tried to upgrade from FreeBSD10-B3 o FreeBSD10-RC1 using
freebsd-update fetch and freebsd-update install, but it reports that:

"WARNING: FreeBSD 10.0-BETA3 HAS PASSED ITS END-OF-LIFE DATE.
Any security issues discovered after Sat Dec  7 00:59:59 CET 2013
will not have been corrected."

Is there a safe way to upgrade to a new RC1? Thanks!