diff --git a/.gitignore b/.gitignore
index 6833589..8cfe0d4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,7 +5,8 @@
 /result
 /target
 /out
-/initrd.gz
+/initrd*
+/patos*
 .*.swp
 .*.swo
 .nixos-test-history
diff --git a/flake.nix b/flake.nix
index 90fe634..9e95404 100644
--- a/flake.nix
+++ b/flake.nix
@@ -28,7 +28,7 @@
             mkdir -p patos/efi/boot
             ${self.packages.${system}.systemd.out}/usr/bin/ukify build \
             --linux ${self.packages.${system}.kernel.kernel}/bzImage \
-            --initrd ./initrd.gz \
+            --initrd ./initrd.xz \
             --cmdline "console=ttyS0" \
             -o patos/efi/boot/bootx64.efi
           '';
diff --git a/systemd/0017-meson.build-do-not-create-systemdstatedir.patch b/systemd/0017-meson.build-do-not-create-systemdstatedir.patch
deleted file mode 100644
index debcaab..0000000
--- a/systemd/0017-meson.build-do-not-create-systemdstatedir.patch
+++ /dev/null
@@ -1,21 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: nikstur <nikstur@outlook.com>
-Date: Mon, 6 Nov 2023 22:51:38 +0100
-Subject: [PATCH] meson.build: do not create systemdstatedir
-
----
- meson.build | 1 -
- 1 file changed, 1 deletion(-)
-
-diff --git a/meson.build b/meson.build
-index bffda86845..cb5dcec0f9 100644
---- a/meson.build
-+++ b/meson.build
-@@ -2781,7 +2781,6 @@ install_data('LICENSE.GPL2',
- install_subdir('LICENSES',
-                install_dir : docdir)
- 
--install_emptydir(systemdstatedir)
- 
- #####################################################################
- 
diff --git a/systemd/default.nix b/systemd/default.nix
index 3174f0f..4daf9ed 100644
--- a/systemd/default.nix
+++ b/systemd/default.nix
@@ -32,10 +32,6 @@ stdenv.mkDerivation (finalAttrs: {
 
   dontCheckForBrokenSymlinks = true;
 
-  patches = [
-    ./0017-meson.build-do-not-create-systemdstatedir.patch
-  ];
-
   nativeBuildInputs = with pkgs; [
     bash
     pkg-config
@@ -196,7 +192,7 @@ stdenv.mkDerivation (finalAttrs: {
     (lib.mesonOption "dbussystemservicedir" "/usr/share/dbus-1/system-services")
     (lib.mesonOption "setfont-path" "/usr/bin/setfont")
     (lib.mesonOption "loadkeys-path" "/usr/bin/loadkeys")
-    (lib.mesonOption "sulogin-path"  "/usr/bin/sulogin")
+    (lib.mesonOption "sulogin-path" "/usr/bin/sulogin")
     (lib.mesonOption "nologin-path" "/usr/bin/nologin")
     (lib.mesonOption "mount-path" "/usr/bin/mount")
     (lib.mesonOption "umount-path" "/usr/bin/umount")
diff --git a/utils/mkinitrd.nix b/utils/mkinitrd.nix
index 47f7f30..201d14c 100644
--- a/utils/mkinitrd.nix
+++ b/utils/mkinitrd.nix
@@ -8,7 +8,7 @@ pkgs.writeShellApplication {
 
   runtimeInputs = with pkgs; [
     cpio
-    gzip
+    xz
   ];
 
   text = ''
@@ -117,7 +117,7 @@ pkgs.writeShellApplication {
     ln -sf ../demo.service usr/lib/systemd/system/basic.target.wants/demo.service
 
     # gen initrd
-    find . -print0 | cpio --null --owner=root:root -o --format=newc | gzip -9 > ../initrd.gz
+    find . -print0 | cpio --null --owner=root:root -o --format=newc | xz -9 --check=crc32 > ../initrd.xz
 
     popd
     rm -rf root