diff --git a/machines/nunotaba/hardware-configuration.nix b/machines/nunotaba/hardware-configuration.nix
index 297d6c7..9587eaa 100644
--- a/machines/nunotaba/hardware-configuration.nix
+++ b/machines/nunotaba/hardware-configuration.nix
@@ -25,9 +25,9 @@
 
   fileSystems = {
     "/" = {
-      device = "/dev/disk/by-uuid/8937d1ac-23cb-456f-9c16-e348acc66bb7";
-      fsType = "ext4";
-      options = [ "discard" "noatime" ];
+      device = "/dev/disk/by-uuid/c3ab2182-18b3-4cc6-a5b3-3fef32222aef";
+      fsType = "btrfs";
+      options = [ "discard=async" "noatime" "compress=zstd" ];
     };
 
     "/boot" = {