diff --git a/nix.nix b/nix.nix
index 5b5a8c6..b1d0109 100644
--- a/nix.nix
+++ b/nix.nix
@@ -52,10 +52,10 @@ in {
         virtualisation = {
           docker.enable = true;
           darwin-builder = {
-            diskSize = 40 * 1024;
+            diskSize = 50 * 1024;
             memorySize = 8 * 1024;
           };
-          cores = 4;
+          cores = 8;
         };
         nix.settings = nixSettings // { sandbox = false; };
       });