5.1.0 --version still reports as version 5.0.0?

[OliverJAsh]

I had 5.0.0 installed. I uninstalled it and then installed it again. Apparently 5.1.0 was installed, but --version still returns 5.0.0 for some reason?

$ brew install gist
==> Downloading https://homebrew.bintray.com/bottles/gist-5.1.0.catalina.bottle.tar.gz
######################################################################## 100.0%
==> Pouring gist-5.1.0.catalina.bottle.tar.gz
🍺  /usr/local/Cellar/gist/5.1.0: 5 files, 79.5KB

$ gist --version
gist v5.0.0

$ /usr/local/Cellar/gist/5.1.0/bin/gist --version
gist v5.0.0