I ran into same issue, it seems that in order to use some packages that are not pure perl, you need to rebuild them in order to use them with new perl version. Yum normally rebuilds them, but if you installed them manually, the yum can not detect them and keep the old version. I resolved the issue this way : 

mv /usr/lib/perl5 /usr/lib/perl5-backup
mv /usr/lib64/perl5 /usr/lib64/perl5-backup
yum reinstall perl

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In reply to Re: CPAN Error by Anonymous Monk
in thread CPAN Error by narendere

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