diff --git a/systems/x86_64-linux/builder/default.nix b/systems/x86_64-linux/builder/default.nix
index 4974266..9098701 100644
--- a/systems/x86_64-linux/builder/default.nix
+++ b/systems/x86_64-linux/builder/default.nix
@@ -120,7 +120,7 @@
   services.openssh = {
     enable = true;
     # require public key authentication for better security
-    settings.PasswordAuthentication = false;
+    settings.PasswordAuthentication = true;
     settings.KbdInteractiveAuthentication = false;
     settings.PermitRootLogin = "yes";
   };
@@ -153,6 +153,7 @@
   nix.buildMachines = [
     {
       hostName = "localhost";
+      protocol = null;
       systems = [
         "x86_64-linux"
         "aarch64-linux"
@@ -201,7 +202,8 @@
     };
 
     virtualHosts."binarycache.julian-mutter.de" = {
-      locations."/".proxyPass = "http://${config.services.nix-serve.bindAddress}:${toString config.services.nix-serve.port}";
+      locations."/".proxyPass =
+        "http://${config.services.nix-serve.bindAddress}:${toString config.services.nix-serve.port}";
     };
   };