【Ruby】rbenvでバージョン切り替わらない

rbenv initで出てきた文字列を実行すればいいと思います

~/D/ ❯❯❯ rbenv global 2.6.0
~/D/ ❯❯❯ ruby -v
ruby 2.3.7p456 (2018-03-28 revision 63024) [universal.x86_64-darwin18]
~/D/ ❯❯❯ which ruby
/usr/bin/ruby
~/D/ ❯❯❯ rbenv versions
  system
* 2.6.0 (set by /Users/yuta/.rbenv/version)
~/D/ ❯❯❯ ruby -v
ruby 2.3.7p456 (2018-03-28 revision 63024) [universal.x86_64-darwin18]
~/D/ ❯❯❯ rbenv init
# Load rbenv automatically by appending
# the following to ~/.zshrc:

eval "$(rbenv init -)"

~/D/ ❯❯❯ vim ~/.zshrc                                                                                ✘ 1
~/D/ ❯❯❯ source ~/.zshrc
~/D/ ❯❯❯ ruby -v
ruby 2.6.0p0 (2018-12-25 revision 66547) [x86_64-darwin18]
~/D/ ❯❯❯