Do the dependent need visa when changing SOC of main app?

[Lakhvir]

Dear Experts,

My company is adding new responsibilities to my current job role in addition to current job duties. They also offering me new job title which fall under different SOC. By reading other posts, I gathered that I have to make new T2 application.

I was wondering whether my dependents have to make a new applications as well? Note, their current stay are valid until December 2017.

Thanks in Advance!