diff --git a/hostconfig/gandalf/nixos.nix b/hostconfig/gandalf/nixos.nix
index 4424c09..b22f70e 100644
--- a/hostconfig/gandalf/nixos.nix
+++ b/hostconfig/gandalf/nixos.nix
@@ -1,4 +1,5 @@
-{pkgs, ...}: {
+{ pkgs, ... }:
+{
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;
   boot.kernelParams = [ "amd_pstate=active" ];
@@ -6,6 +7,10 @@
 
   boot.resumeDevice = "/dev/disk/by-uuid/6993932f-5b29-4207-915a-2f185ec9f485";
 
+  systemd.sleep.extraConfig = ''
+    HibernateDelaySec=1h
+  '';
+
   powerManagement = {
     enable = true;
     powertop.enable = true;