diff --git a/configuration.nix b/configuration.nix
index a210e0b..3f5bf1e 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -40,6 +40,7 @@
     neovim
     git
     tmux
+    ncdu
   ];
 
   nixpkgs.config.allowUnfree = true;