diff --git a/common/main.nix b/common/main.nix
index d993956..fd5296e 100644
--- a/common/main.nix
+++ b/common/main.nix
@@ -14,6 +14,7 @@
   environment.systemPackages = with pkgs; [
     vim wget git htop tmux pciutils tcpdump ripgrep nix-index nixos-option
     nix-diff ipmitool freeipmi ethtool lm_sensors ix cmake gnumake file tree
+    ncdu
   ];
 
   systemd.services."serial-getty@ttyS0" = {