Pyenv shims cannot find executables

After I upgrade python to the new version on my laptop, and when I run python I got this warning:

/Users/darm/.pyenv/shims/python3: line 21: /usr/local/Cellar/pyenv/1.2.18/libexec/pyenv: No such file or directory

To solve the issue, you have to rehash it, like below.

pyenv rehash