diff --git a/doc/cheatsheet.md b/doc/cheatsheet.md
index 1197308..daa419b 100644
--- a/doc/cheatsheet.md
+++ b/doc/cheatsheet.md
@@ -32,8 +32,9 @@ set -o nounset
 set -o pipefail
 ```
 
-### A shell script static analysis tool
-[ShellCheck](https://github.com/koalaman/shellcheck)
+### Tools
+- [ShellCheck](https://github.com/koalaman/shellcheck) A shell script static analysis tool
+- [direnv](https://direnv.net/) Directory specific variables
 
 
 ## Kubernetes