diff --git a/nix/os/devices/167.233.1.14/system.nix b/nix/os/devices/167.233.1.14/system.nix
index e57d1b0..16dd027 100644
--- a/nix/os/devices/167.233.1.14/system.nix
+++ b/nix/os/devices/167.233.1.14/system.nix
@@ -7,6 +7,15 @@ let
   keys = import ../../../variables/keys.nix;
 
 in {
+  nix.binaryCaches = [
+    "https://cache.holo.host"
+  ];
+
+  nix.binaryCachePublicKeys = [
+    "cache.holo.host-1:lNXIXtJgS9Iuw4Cu6X0HINLu9sTfcjEntnrgwMQIMcE="
+    "cache.holo.host-2:ZJCkX3AUYZ8soxTLfTb60g+F3MkWD7hkH9y8CgqwhDQ="
+  ];
+
   # TASK: new device
   networking.hostName = "sj-pvehtz-0"; # Define your hostname.
   # networking.domain =  "";