diff --git a/configuration.nix b/configuration.nix
index 98345c0..03dfead 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -29,6 +29,19 @@
   # Flake
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
 
+  # Garbage collection
+  nix.gc = {
+  automatic = true;
+  dates = "weekly";
+  options = "--delete-older-than 30d";
+  };
+
+  # Storage optimisation
+  nix.optimise = {
+  automatic = true;
+  dates = [ "weekly" ];
+  };
+
   # Enable networking
   networking.networkmanager.enable = true;