diff --git a/home-manager/no-gui.nix b/home-manager/no-gui.nix
index 2954445..9d9fcae 100644
--- a/home-manager/no-gui.nix
+++ b/home-manager/no-gui.nix
@@ -97,6 +97,9 @@ let
 
     # lspci
     pciutils
+
+    # convert between various units
+    units
   ];
 
 in