diff --git a/nixos/machines/nyarlathotep/hardware-configuration.nix b/nixos/machines/nyarlathotep/hardware-configuration.nix
index 83a6dcc..9f0307e 100644
--- a/nixos/machines/nyarlathotep/hardware-configuration.nix
+++ b/nixos/machines/nyarlathotep/hardware-configuration.nix
@@ -7,18 +7,18 @@
   };
   fileSystems."/persist" = {
     device = "/dev/disk/by-uuid/a72da670-f631-49b1-bcb3-6d378cc1f2d0";
-    fsType = "ext4";
-    neededForBoot = true;
+    fsType = "btrfs";
+    options = [ "subvol=persist" ];
   };
   fileSystems."/boot" = {
-    device = "/persist/boot";
-    fsType = "none";
-    options = [ "bind" ];
+    device = "/dev/disk/by-uuid/a72da670-f631-49b1-bcb3-6d378cc1f2d0";
+    fsType = "btrfs";
+    options = [ "subvol=boot" ];
   };
   fileSystems."/nix" = {
-    device = "/persist/nix";
-    fsType = "none";
-    options = [ "bind" ];
+    device = "/dev/disk/by-uuid/a72da670-f631-49b1-bcb3-6d378cc1f2d0";
+    fsType = "btrfs";
+    options = [ "subvol=nix" ];
   };
   fileSystems."/var/vmail" = {
     device = "/dev/disk/by-uuid/23c44c93-5035-4e29-9e46-75c1c08f4cea";