diff --git a/progs.csv b/progs.csv
index 74fadf2..72015d1 100644
--- a/progs.csv
+++ b/progs.csv
@@ -7,6 +7,7 @@
 ,ttf-linux-libertine,"provides the sans and serif fonts for LARBS."
 ,ranger,"is an extensive terminal file manager that everyone likes."
 ,vifm,"is an extensive terminal file manager that everyone likes."
+,tree,"lists directory contents like trees. Used by vifm."
 ,arandr,"is a UI for screen adjustment."
 ,bc,"is used for a dropdown calculator."
 ,calcurse,"is a lightweight terminal-based calendar."