diff --git a/docs/dev_environment.md b/docs/dev_environment.md
--- a/docs/dev_environment.md
+++ b/docs/dev_environment.md
@@ -59,6 +59,14 @@
 curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
 ```
 
+## ShellCheck
+
+[ShellCheck](https://www.shellcheck.net/) is a static analysis tool that provides warnings and suggestions for shell scripts. We’ll install ShellCheck using Homebrew.
+
+```
+brew install shellcheck && brew upgrade shellcheck
+```
+
 ## Yarn
 
 We use the [Yarn](https://yarnpkg.com/) package manager for JavaScript in our repo.