perl升级出错,求助!

一台服务器,运行Centos 4.5 ,现在用yum进行升级,提示:

QUOTE:
Transaction Check Error:   file /usr/share/man/man3/Compress::Zlib.3pm.gz from install of perl-Compress-Zlib-1.42-1.el4 conflicts with file from package perl-Compress-Zlib-1.21-RH9

如何解决?谢谢!