diff --git a/README.md b/README.md
index 51dae82..95d6aea 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,6 @@ To enable automatic updates for a host, set `aux.system.services.autoUpgrade = t
 aux.system.services.autoUpgrade = {
   enable = true;
   configDir = config.secrets.nixConfigFolder;
-  extraFlags = "--build-host hevana";
   onCalendar = "daily";
   user = config.users.users.aires.name;
 };
diff --git a/hosts/Hevana/default.nix b/hosts/Hevana/default.nix
index 5d632b6..545881b 100644
--- a/hosts/Hevana/default.nix
+++ b/hosts/Hevana/default.nix
@@ -44,32 +44,6 @@ in
   #   To see all available timezones, run `timedatectl list-timezones`.
   time.timeZone = "America/New_York";
 
-  # Build Nix packages for other hosts.
-  # Runs every day at 4 AM
-  systemd = {
-    services."build-hosts" = {
-      serviceConfig = {
-        Type = "oneshot";
-        User = "root";
-      };
-      path = config.aux.system.corePackages;
-      script = ''
-        cd ${config.secrets.nixConfigFolder}
-        nixos-rebuild build --flake .#Khanda
-      '';
-    };
-    timers."build-hosts" = {
-      wants = [ "network-online.target" ];
-      after = [ "network-online.target" ];
-      wantedBy = [ "timers.target" ];
-      timerConfig = {
-        OnCalendar = "04:00";
-        Persistent = true;
-        Unit = "build-hosts.service";
-      };
-    };
-  };
-
   # Configure the system.
   aux.system = {
     # Enable to allow unfree (e.g. closed source) packages.
diff --git a/hosts/Khanda/default.nix b/hosts/Khanda/default.nix
index a6e0c3c..5f72077 100644
--- a/hosts/Khanda/default.nix
+++ b/hosts/Khanda/default.nix
@@ -50,7 +50,6 @@ in
     services = {
       autoUpgrade = {
         enable = true;
-        extraFlags = "--build-host hevana";
         configDir = config.secrets.nixConfigFolder;
         onCalendar = "weekly";
         user = config.users.users.aires.name;