diff --git a/nix-os/nix.nix b/nix-os/nix.nix
index 8d4c425..bce75a5 100644
--- a/nix-os/nix.nix
+++ b/nix-os/nix.nix
@@ -54,6 +54,7 @@ in {
     nix.package = wrappedNixExecutables false;
     environment.systemPackages = [
       pkgs.nix-output-monitor
+      pkgs.nix-diff
     ] ++ lib.map (lib.hiPrio) [
       (wrappedNixExecutables true)
       wrappedNixosExecutables