These are applicable to MacOS Sierra 10.12.5 (16F73) and probably some other recent and upcoming versions of MacOS.
chsh
is not enough to change the default shell. Make sure you press Command+, while your terminal is open and change the 'Shells open with' option to 'Default login shell.'
In case of bash, make sure that you execute echo $BASH_VERSION
to confirm you are running the intended version of bash. bash --version
does not give you correct information.