diff --git a/modules/common.nix b/modules/common.nix
index c31a55f..203e5c7 100644
--- a/modules/common.nix
+++ b/modules/common.nix
@@ -115,6 +115,7 @@ in {
     dnsutils
     tailscale
     nix-top
+    nix-tree
   ];
 
   documentation = {