diff --git a/systems/aarch64-darwin/rialo/default.nix b/systems/aarch64-darwin/rialo/default.nix
index d59dab7..fb81221 100644
--- a/systems/aarch64-darwin/rialo/default.nix
+++ b/systems/aarch64-darwin/rialo/default.nix
@@ -42,6 +42,7 @@ with lib.metacfg;
     nodejs
     qemu
     virt-manager
+    sox
   ];
 
   users.users.harald.shell = pkgs.fish;