diff --git a/modules/base/shellapps/shellapps.nix b/modules/base/shellapps/shellapps.nix
index 8519cf7..d86d064 100644
--- a/modules/base/shellapps/shellapps.nix
+++ b/modules/base/shellapps/shellapps.nix
@@ -5,6 +5,7 @@
       git
       nil
       yaml-language-server
+      tree
     ];
   };
 }