diff --git a/nix/os/profiles/common/system.nix b/nix/os/profiles/common/system.nix
index 91b7ce7..6256dff 100644
--- a/nix/os/profiles/common/system.nix
+++ b/nix/os/profiles/common/system.nix
@@ -19,8 +19,8 @@
 
   nix.daemonNiceLevel = lib.mkDefault 19;
   nix.daemonIONiceLevel = lib.mkDefault 7;
-  nix.maxJobs = lib.mkDefault 3;
-  nix.buildCores = lib.mkDefault 3;
+  nix.maxJobs = lib.mkDefault "auto";
+  nix.buildCores = lib.mkDefault 0;
   nix.useSandbox = true;
 
   environment.etc."lvm/lvm.conf".text = ''