diff --git a/nixos/system.nix b/nixos/system.nix
index e1b69ca..a31b97c 100644
--- a/nixos/system.nix
+++ b/nixos/system.nix
@@ -23,13 +23,17 @@
   # Auto clean system
   nix = {
     settings = {
-      auto-optimise-store = true;
+      # auto-optimise-store = true;
       experimental-features = [
         "nix-command"
         "flakes"
       ];
       warn-dirty = false;
     };
+    optimise = {
+      automatic = true;
+      dates = ["04:00"];
+    };
     gc = {
       automatic = true;
       dates = "weekly";