diff --git a/README.md b/README.md
index d8011d6..26015d0 100644
--- a/README.md
+++ b/README.md
@@ -356,6 +356,7 @@ the state of the Zsh session and to delete the plugins and snippets from the dis
 * [calc](https://github.com/arzzen/calc.plugin.zsh) - A calculator for ZSH.
 * [caniuse](https://github.com/walesmd/caniuse.plugin.zsh) - Add [Can I Use...](https://caniuse.com) support to ZSH.
 * [careful_rm](https://github.com/MikeDacre/careful_rm) - A wrapper for `rm` that adds trash/recycling and useful warnings.
+* [case](https://github.com/rtuin/zsh-case) - A ZSH plugin that adds two aliases `tolower` and `touper` to switch output case.
 * [cd-gitroot](https://github.com/mollifier/cd-gitroot) - A ZSH plugin to `cd` to the `git` repository root directory.
 * [cd-reminder](https://github.com/bartboy011/cd-reminder) - Display reminders when `cd`-ing into specified directories.
 * [cd-reporoot](https://github.com/P4Cu/cd-reporoot) - A ZSH plugin to `cd` to the current repository checkout's root directory.