diff --git a/flake.nix b/flake.nix
index b3fff6e..1e5fc62 100644
--- a/flake.nix
+++ b/flake.nix
@@ -41,7 +41,10 @@
               nix = {
                 buildMachines = [ ];
                 distributedBuilds = false;
-                settings.experimental-features = [ "nix-command" "flakes" ];
+                settings = {
+                  auto-optimise-store = true;
+                  experimental-features = [ "nix-command" "flakes" ];
+                };
               };
 
               boot = {