diff --git a/config/common/default.nix b/config/common/default.nix
index ac0d79e..2c1c731 100644
--- a/config/common/default.nix
+++ b/config/common/default.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }: 
+{ config, inputs, lib, pkgs, ... }: 
 
 with lib; {
   imports = [
@@ -7,6 +7,7 @@ with lib; {
     ./openssh.nix
     ./users
     ../../modules
+    inputs.lix-module.nixosModules.default
   ];
   environment.systemPackages = with pkgs; [
     kitty.terminfo
@@ -53,7 +54,6 @@ with lib; {
   '';
   users.motdFile = "/var/lib/deployment/motd";
 
-  nix.package = pkgs.nixVersions.latest;
   nix.gc.automatic = true;
   nix.gc.options = "--delete-older-than 7d";
   nix.optimise.automatic = true;
@@ -62,7 +62,7 @@ with lib; {
     path = pkgs.path;
   };
   nix.settings = {
-    experimental-features = [ "nix-command" "flakes" "pipe-operators" ];
+    experimental-features = [ "nix-command" "flakes" "pipe-operator" ];
     trusted-users = [ "root" "@wheel" ];
     substituters = [ "https://cache.kyouma.net" ];
     trusted-public-keys = [ "cache.kyouma.net:Frjwu4q1rnwE/MnSTmX9yx86GNA/z3p/oElGvucLiZg=" ];
diff --git a/config/services/hydra/default.nix b/config/services/hydra/default.nix
index 6279c58..103c0ad 100644
--- a/config/services/hydra/default.nix
+++ b/config/services/hydra/default.nix
@@ -1,7 +1,6 @@
 { config, inputs, lib, ... }: {
   imports = [
     ./nix-config.nix
-    inputs.lix-module.nixosModules.default
   ];
   sops.secrets."services/hydra/signKey" = {
     owner = "hydra-queue-runner";
@@ -19,9 +18,6 @@
   };
   kyouma.deployment.auto-upgrade.cache = "daemon";
 
-  nix.package = lib.mkForce inputs.lix-module.packages.${config.nixpkgs.hostPlatform.system}.default;
-  nix.settings.experimental-features = lib.mkForce [ "nix-command" "flakes" "pipe-operator" ];
-
   services.hydra = {
     enable = true;
     package = inputs.hydra.packages.${config.nixpkgs.hostPlatform.system}.hydra;
@@ -40,7 +36,7 @@
   };
   services.harmonia = {
     enable = true;
-    signKeyPath = config.sops.secrets."services/hydra/signKey".path;
+    signKeyPaths = lib.singleton config.sops.secrets."services/hydra/signKey".path;
     settings = {
       bind = "[::1]:5555";
     };
diff --git a/flake.lock b/flake.lock
index b5c0dda..0e4ac63 100644
--- a/flake.lock
+++ b/flake.lock
@@ -569,11 +569,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1725893417,
-        "narHash": "sha256-fj2LxTZAncL/s5NrtXe1nLfO0XDvRixtCu3kmV9jDPw=",
+        "lastModified": 1725948275,
+        "narHash": "sha256-4QOPemDQ9VRLQaAdWuvdDBhh+lEUOAnSMHhdr4nS1mk=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "10541f19c584fe9633c921903d8c095d5411e041",
+        "rev": "e5fa72bad0c6f533e8d558182529ee2acc9454fe",
         "type": "github"
       },
       "original": {
@@ -953,11 +953,11 @@
         "treefmt-nix": "treefmt-nix_2"
       },
       "locked": {
-        "lastModified": 1725921389,
-        "narHash": "sha256-RBpN0ToD8O3qniBjqUiB1d2/LQJt5kH5P3Gt6dF91L0=",
+        "lastModified": 1725956241,
+        "narHash": "sha256-UL8WJvT+67ZNNc0GmfhygDzggq/lidyRRSN1jPXzr+0=",
         "owner": "nix-community",
         "repo": "nixvim",
-        "rev": "facf6b2d0c9e22d858956d1d458eac6baf155a08",
+        "rev": "faa2e6306c0a1ae8e67dfdb0d75cd5ecd427ca5d",
         "type": "github"
       },
       "original": {