diff --git a/content/documentation/in-the-wild.md b/content/documentation/in-the-wild.md
index d93e801..5342960 100644
--- a/content/documentation/in-the-wild.md
+++ b/content/documentation/in-the-wild.md
@@ -19,6 +19,7 @@ This page contains a list of libraries and projects that use Phel. If you want t
 * [lisp-webscript-examples](https://github.com/kloimhardt/lisp-webscript-examples) Reactive web-apps using Phel + ClojureScript via GraphQL.
 * [zo3ja](https://github.com/smeghead/zo3ja) A simple CLI RSS checker implemented with phel.
 * [phel-tic-tac-toe](https://github.com/smeghead/phel-tic-tac-toe) The tic-tac-toe game using the CLI terminal written in phel.
+* [phel-old-school-guestbook](https://github.com/smeghead/phel-old-school-guestbook) This is a very primitive project of a small bulletin board Phel-lang application using mysql for storage.