diff --git a/common/nix.nix b/common/nix.nix
index 8fba6613..47975e3b 100644
--- a/common/nix.nix
+++ b/common/nix.nix
@@ -17,7 +17,7 @@
     optimise.automatic = true;
 
     settings = {
-      auto-optimise-store = false;
+      auto-optimise-store = true;
       experimental-features = ["nix-command" "flakes"];
 
       substituters = [