Nexus 6 Verizon update

I have not had a sim in my N6 for a while and it updated the other day to 7.1.1 build N6F27M. I just popped in my Verizon sim and it shows a update of 7.1.1 build NGI77B ( for Verizon).

Is there any need to take this update vs. keeping the other? Everything seems to be working fine. HD voice, etc.

Thanks for any and all input.😀