diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index a3ed0c1..91eccf8 100644
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -18,7 +18,7 @@
   boot.loader.efi.canTouchEfiVariables = true;
   boot.loader.efi.efiSysMountPoint = "/boot/efi";
 
-  boot.cleanTmpDir = true;
+  boot.tmp.cleanOnBoot = true;
 
   networking.hostName = "pierre"; # Define your hostname.
   # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.