diff --git a/nix/configurations/vanadium/nixos/fs.nix b/nix/configurations/vanadium/nixos/fs.nix
index e998b645..93c4d2c4 100644
--- a/nix/configurations/vanadium/nixos/fs.nix
+++ b/nix/configurations/vanadium/nixos/fs.nix
@@ -72,5 +72,6 @@
   environment.systemPackages = [
     pkgs.lsof
     pkgs.smartmontools
+    pkgs.compsize
   ];
 }