diff --git a/services/nix-cache/default.nix b/services/nix-cache/default.nix
index 5f6e1c4..d8396ef 100644
--- a/services/nix-cache/default.nix
+++ b/services/nix-cache/default.nix
@@ -2,7 +2,7 @@
 {
   imports = [
     ./build-flakes.nix
-    ./nix-serve.nix
+    ./harmonia.nix
     ./proxy.nix
   ];
 }
diff --git a/services/nix-cache/nix-serve.nix b/services/nix-cache/harmonia.nix
similarity index 50%
rename from services/nix-cache/nix-serve.nix
rename to services/nix-cache/harmonia.nix
index e1771e9..ddc6319 100644
--- a/services/nix-cache/nix-serve.nix
+++ b/services/nix-cache/harmonia.nix
@@ -1,12 +1,12 @@
-{ pkgs, config, ... }:
+{ config, ... }:
 {
   sops.secrets."cache-secret" = {
     sopsFile = ../../secrets/nix-cache01/cache-secret;
     format = "binary";
   };
-  services.nix-serve = {
+
+  services.harmonia = {
     enable = true;
-    package = pkgs.nix-serve-ng;
-    secretKeyFile = config.sops.secrets.cache-secret.path;
+    signKeyPaths = [ config.sops.secrets.cache-secret.path ];
   };
 }