diff --git a/README.md b/README.md
index 75af4b5..ae6abb3 100644
--- a/README.md
+++ b/README.md
@@ -1264,6 +1264,7 @@ shell for OS X, Linux, and the rest of the family.
 Install the latest version and set as current users' default shell:
 ```bash
 brew install zsh && \
+sudo sh -c 'echo $(brew --prefix)/bin/zsh >> /etc/shells' \
 chsh -s $(brew --prefix)/bin/zsh
 ```