diff --git a/hosts/common/default.nix b/hosts/common/default.nix
index f8ffc69..80de576 100644
--- a/hosts/common/default.nix
+++ b/hosts/common/default.nix
@@ -3,6 +3,7 @@
   imports = [
     ./autoupdate.nix
     ./garbage-collect.nix
+    ./optimise.nix
   ];
   system.stateVersion = "23.11";
 }
\ No newline at end of file
diff --git a/hosts/common/optimise.nix b/hosts/common/optimise.nix
new file mode 100644
index 0000000..b4d7458
--- /dev/null
+++ b/hosts/common/optimise.nix
@@ -0,0 +1,7 @@
+{ pkgs, ... }:
+{
+  nix.optimise = {
+    automatic = true;
+    dates = [ "05:00" ];
+  };
+}
\ No newline at end of file