nixos: 25.11 -> 26.05

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/1267bb4920d0fc06ea916734c11b0bf004bbe17e' (2026-02-25)
  → 'github:NixOS/nixpkgs/78e9c786dc08cd4f3420c2395cd977206a9b1da2' (2026-09-30)

2 files changed, 5 insertions, 5 deletions

diff --git a/flake.lock b/flake.lock
index aae6c27..348c22c 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,16 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1772047000,
-        "narHash": "sha256-7DaQVv4R97cii/Qdfy4tmDZMB2xxtyIvNGSwXBBhSmo=",
+        "lastModified": 1790750587,
+        "narHash": "sha256-VfjaoJ1Uyb7JZTrBgE5Jf2nhjtQPmD9KOd19HJwmZwM=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "1267bb4920d0fc06ea916734c11b0bf004bbe17e",
+        "rev": "78e9c786dc08cd4f3420c2395cd977206a9b1da2",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-25.11",
+        "ref": "nixos-26.05",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 4f7943e..35355b7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,6 +1,6 @@
 {
   description = "Minimal NixOS installation media";
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-26.05";
   outputs =
     {
       self,