How do I upgrade Hyper-V Manager from 6.2 to 6.3

Dear All,

I want to create a virtual hard disk over 2TB.

According to my research, I need to assign generation 2 and convert the disk to GPT type.

I have hyper-V manager in my Server 2012 R2m but it does not have generation option for assigning generation 2 type to VHD due to the version is 6.2.9200.16384

How do I upgrade it from 6.2 to 6.3?

Many thanks.

Yiwei