diff --git a/modules/base/default.nix b/modules/base/default.nix
index 433ce25..b3c8653 100644
--- a/modules/base/default.nix
+++ b/modules/base/default.nix
@@ -9,6 +9,8 @@
     package = pkgs.nix;
 
     settings = {
+      auto-optimise-store = true;
+
       experimental-features = [
         "nix-command"
         "flakes"