yum update / php dependency failure

[wavedave]

CentOS 4.4, Plesk 8.1.1

I run 'yum update' via cron and just discovered that it's failing due to:

Error: Missing Dependency: php <= 4.4.0 is needed by package php-sqlite2

I understand I have two versions of PHP and apparently yum isn't seeing
the older one. Can anyone suggest a work-around?

TIA - you peeps are great