diff --git a/ansible/roles/osx/vars/formulae.yml b/ansible/roles/osx/vars/formulae.yml
index ed9c638..612f1e1 100644
--- a/ansible/roles/osx/vars/formulae.yml
+++ b/ansible/roles/osx/vars/formulae.yml
@@ -10,5 +10,6 @@ formulae:
   - reattach-to-user-namespace
   - the_silver_searcher
   - tmux
+  - tree
   - youtube-dl
   - zsh