openjdk downgraded automatically after upgrade from redhat 7.9 to 8.4

openjdk version downgraded automatically after upgrade from redhat 7.9 to 8.4

redhat 7.9 installed with openjdk 1.8.0_332, we planned to upgrade redhat version from 7.9 to 8.4, after upgrade we could notice openjdk version is downgraded automatically to 1.8.0_312.

we have performed redhat upgrade about in 5 system, in all systems it was happened.

Now, we downloaded the openjdk 1.8.0_332 rpm file and configured the java manually in 8.4, but the problem is openjdk not getting updates automatically, whereas other systems(redhat 7.9) getting updates automatically.