[CentOS] mdadm: --update=resync not understood for 1.x metadata

Hi All, Recently I had to update a host that uses raid1 for /boot and /boot/efi and I noticed that my resync service is failing with "mdadm: --update=resync not understood for 1.x metadata”. Does anyone know why 'mdadm-4.2-rc2.el8.x86_64.rpm’ supports it but 'mdadm-4.2-13.el8.x86_64’ not ?

[CentOS] mdadm update

Hi, I have uptodate x86_64 CentOS 5 with official repositories. mdadm version is v2.5.4 - 13 October 2006 This version is known to have problems with raid10 configurations. Sadly, I have a 4 disk raid10 on this system. I tried adding Dag's repository but system complains about some packages