Changing the keychain password is not supported

[kindlyseth]

Changing passwords is sometimes required. Frequently, it's recommended even when not required.

Here's how to do it manually:

USER=sk # substitute your username
# a relative path doesn't work
security set-keychain-password /Users/"$USER"/Library/Keychains/aws-keychain.keychain

[pda]

Note also the keychain can be added to and managed by the Keychain Access.app utility that ships with macOS. No new features coming in aws-keychain; see https://github.com/99designs/aws-vault instead.