How often do you change your master password?

For users of password managers, how often (if ever) do you change your master password?

It's not easy to find concrete recommendations on this subject from the password manager authors. Here's 1password saying never change it[1]:

> But it’s not a good idea to regularly change your Master Password. Ideally, you should pick a good Master Password at the outset and never change it.

Can that really be true? Does it make sense to assume it never gets compromised?

I realize it depends on what networks you're using and how the PM works, but all systems are subject to compromise and mistakes.

How often do users of PMs change their master passwords? For which PMs? Why?

[1] https://blog.1password.com/toward-better-master-passwords/