diff --git a/config/hosts/netbox/netbox.nix b/config/hosts/netbox/netbox.nix
index 152cf92..9c07233 100644
--- a/config/hosts/netbox/netbox.nix
+++ b/config/hosts/netbox/netbox.nix
@@ -9,6 +9,7 @@
 {
   services.netbox = {
     enable = true;
+    package = pkgs.netbox;
     secretKeyFile = "/secrets/netbox-secret-key.secret";
     settings = {
       ALLOWED_HOSTS = [ "netbox.hamburg.ccc.de" ];
diff --git a/flake.lock b/flake.lock
index a691519..c3336e5 100644
--- a/flake.lock
+++ b/flake.lock
@@ -52,6 +52,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-23-11": {
+      "locked": {
+        "lastModified": 1701374686,
+        "narHash": "sha256-xaJPtgvTuUGSPba8p3+ezCJjKnVij77ai8OE2bnTC0E=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "1bce6a1791a513af2727e5b668b3cd9ba76cb0bf",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-23.11-small",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs-unstable": {
       "locked": {
         "lastModified": 1699354722,
@@ -72,6 +88,7 @@
       "inputs": {
         "nixos-generators": "nixos-generators",
         "nixpkgs": "nixpkgs",
+        "nixpkgs-23-11": "nixpkgs-23-11",
         "nixpkgs-unstable": "nixpkgs-unstable"
       }
     }
diff --git a/flake.nix b/flake.nix
index 4409302..2ddf5a4 100644
--- a/flake.nix
+++ b/flake.nix
@@ -6,6 +6,7 @@
     # https://nixos.org/manual/nixos/stable/#sec-upgrading
     # https://github.com/NixOS/nixpkgs
     nixpkgs.url = "github:nixos/nixpkgs/nixos-23.05-small";
+    nixpkgs-23-11.url = "github:nixos/nixpkgs/nixos-23.11-small";
     nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable-small";
 
     # Add nixos-generators as an input.
@@ -16,7 +17,7 @@
     };
   };
 
-  outputs = { nixpkgs, nixpkgs-unstable, nixos-generators, ... }:
+  outputs = { nixpkgs, nixpkgs-23-11, nixpkgs-unstable, nixos-generators, ... }:
     let
       pkgs-unstable = nixpkgs-unstable.legacyPackages."x86_64-linux";
       # Shairport Sync 4.3.1 (with nqptp 1.2.4) with metadata, MQTT and AirPlay 2 support.
@@ -65,6 +66,7 @@
         nodeNixpkgs = {
           audio-hauptraum-kueche = nixpkgs-unstable.legacyPackages."x86_64-linux".extend shairportSync431ExtendedNixpkgsUnstableOverlay;
           audio-hauptraum-tafel = nixpkgs-unstable.legacyPackages."x86_64-linux".extend shairportSync431ExtendedNixpkgsUnstableOverlay;
+          netbox = nixpkgs-23-11.legacyPackages."x86_64-linux";
         };
         nodeSpecialArgs = {
           public-web-static = { inherit pkgs-unstable; };