diff --git a/configuration.nix b/configuration.nix
index e852e0a..74f36cf 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -71,6 +71,7 @@
       vim
       wget
       yq
+      ncdu
     ]) ++ (with pkgs.gnomeExtensions; [
       pop-shell
       window-is-ready-remover
diff --git a/home.nix b/home.nix
index 09c612c..d21612a 100644
--- a/home.nix
+++ b/home.nix
@@ -154,7 +154,11 @@
       enable = true;
       autocd = true;
       autosuggestion.enable = true;
-      prezto.enable = true;
+
+      prezto = {
+        enable = true;
+        utility.safeOps = false;
+      };
 
       shellAliases =
         let
@@ -336,7 +340,7 @@
       change-type = 2;
       hide-panel-icon = true;
       history-length = 1;
-      hours = 1;
+      hours = 0;
       minutes = 30;
       sources = [ "42" ];
       fetch-on-startup = true;