diff --git a/default.nix b/default.nix
index 727198c..b9eab50 100644
--- a/default.nix
+++ b/default.nix
@@ -58,6 +58,7 @@
     };
   environment.systemPackages = [
     pkgs.git
+    pkgs.ncdu
   ];
 
 
diff --git a/flake.lock b/flake.lock
index b340c7e..d8434e0 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,16 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1699963925,
-        "narHash": "sha256-LE7OV/SwkIBsCpAlIPiFhch/J+jBDGEZjNfdnzCnCrY=",
-        "owner": "nixos",
+        "lastModified": 1700108881,
+        "narHash": "sha256-+Lqybl8kj0+nD/IlAWPPG/RDTa47gff9nbei0u7BntE=",
+        "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "bf744fe90419885eefced41b3e5ae442d732712d",
+        "rev": "7414e9ee0b3e9903c24d3379f577a417f0aae5f1",
         "type": "github"
       },
       "original": {
-        "owner": "nixos",
-        "ref": "nixos-unstable",
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }