diff --git a/roles/common.nix b/roles/common.nix
index a1a86d6..a088218 100644
--- a/roles/common.nix
+++ b/roles/common.nix
@@ -11,7 +11,7 @@
   i18n.defaultLocale = "en_US.UTF-8";
 
   nix = {
-    autoOptimiseStore = true;
+    settings.auto-optimise-store = true;
     package = pkgs.nixUnstable;
     extraOptions = ''
       experimental-features = nix-command flakes