diff --git a/modules/nixos/configs/system.nix b/modules/nixos/configs/system.nix
index 8522883..6447f7f 100644
--- a/modules/nixos/configs/system.nix
+++ b/modules/nixos/configs/system.nix
@@ -28,7 +28,7 @@ in
 
     (lib.mkIf (cfg.kernel == "hardened") (
       hardenedProfile // {
-        boot.kernelPackages = pkgs.unstable.linuxPackages_6_9_hardened;
+        boot.kernelPackages = pkgs.unstable.linuxPackages_6_6_hardened;
         # Fix for GLIBC errors due to 'scudo' from hardened profile.
         # https://github.com/NixOS/nix/issues/6563
         environment.memoryAllocator.provider = "libc";