diff --git a/flake.lock b/flake.lock
index e62f023..266523b 100644
--- a/flake.lock
+++ b/flake.lock
@@ -18,6 +18,42 @@
         "type": "github"
       }
     },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1726560853,
+        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
+        "type": "github"
+      },
+      "original": {
+        "id": "flake-utils",
+        "type": "indirect"
+      }
+    },
+    "napcat": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1769429623,
+        "narHash": "sha256-Qy1E2TfAw+bL/8/KaRGN0uo768fYJCDf0GQQ4m4oOhE=",
+        "owner": "initialencounter",
+        "repo": "napcat.nix",
+        "rev": "4116701d2fc1ccb6705d2f9c23e282170731fe1d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "initialencounter",
+        "repo": "napcat.nix",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1769018530,
@@ -35,6 +71,18 @@
       }
     },
     "nixpkgs_2": {
+      "locked": {
+        "lastModified": 0,
+        "narHash": "sha256-9UTxR8eukdg+XZeHgxW5hQA9fIKHsKCdOIUycTryeVw=",
+        "path": "/nix/store/60sn02zhawl3kwn0r515zff3h6hg6ydz-source",
+        "type": "path"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs_3": {
       "locked": {
         "lastModified": 1769170682,
         "narHash": "sha256-oMmN1lVQU0F0W2k6OI3bgdzp2YOHWYUAw79qzDSjenU=",
@@ -53,7 +101,8 @@
     "root": {
       "inputs": {
         "catppuccin": "catppuccin",
-        "nixpkgs": "nixpkgs_2",
+        "napcat": "napcat",
+        "nixpkgs": "nixpkgs_3",
         "secrets": "secrets"
       }
     },
@@ -72,6 +121,21 @@
         "type": "git",
         "url": "ssh://git@git.colorsky.fun/Sky/secrets"
       }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index ac9c219..563141d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,6 +2,7 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     catppuccin.url = "github:catppuccin/nix";
+    napcat.url = "github:initialencounter/napcat.nix";
 
     secrets.url = "git+ssh://git@git.colorsky.fun/Sky/secrets?shallow=1";
   };
diff --git a/host/macmini.nix b/host/macmini.nix
index 6904958..50e5692 100644
--- a/host/macmini.nix
+++ b/host/macmini.nix
@@ -8,6 +8,7 @@
     ./hardware-configuration.nix
 
     ../modules/services/ddns-go.nix
+    ../modules/services/napcat.nix
     ../modules/services/nignx.nix
     ../modules/services/gitea.nix
 
diff --git a/modules/services/napcat.nix b/modules/services/napcat.nix
new file mode 100644
index 0000000..feb3004
--- /dev/null
+++ b/modules/services/napcat.nix
@@ -0,0 +1,32 @@
+{ inputs, config, ... }:
+
+let
+  Napcat = inputs.napcat.lib.${config.nixpkgs.system}.buildNapcat {
+    qq_config_dir = "/var/lib/napcat/qq/";
+    nc_config_dir = "/var/lib/napcat/napcat/";
+  };
+in
+{
+  systemd.services.napcat = {
+    enable = true;
+    after = [ "network.target" ];
+    wantedBy = [ "multi-user.target" ];
+    description = "Napcat Service";
+    serviceConfig = {
+      Type = "simple";
+      ExecStart = "${Napcat.script}/bin/NapCat";
+      User = "napcat";
+      Group = "napcat";
+      WorkingDirectory = "/var/lib/napcat/";
+      StateDirectory = "napcat";
+      StateDirectoryMode = "0750";
+    };
+  };
+
+  users.users.napcat = {
+    isNormalUser = true;
+    home = "/var/lib/napcat/";
+    extraGroups = [ "napcat" ];
+  };
+  users.groups.napcat = { };
+}
diff --git a/modules/services/qqbot.nix b/modules/services/qqbot.nix
deleted file mode 100644
index f0cb62c..0000000
--- a/modules/services/qqbot.nix
+++ /dev/null
@@ -1,4 +0,0 @@
-{ inputs, ... }:
-{
-
-}
diff --git a/modules/system/nix.nix b/modules/system/nix.nix
index c2d2eb2..0569e37 100644
--- a/modules/system/nix.nix
+++ b/modules/system/nix.nix
@@ -4,4 +4,10 @@
     "nix-command"
     "flakes"
   ];
+  programs.nh = {
+    enable = true;
+    clean.enable = true;
+    clean.extraArgs = "--keep-since 4d --keep 3";
+    flake = "/home/user/my-nixos-config"; # sets NH_OS_FLAKE variable for you
+  };
 }