diff --git a/tests/flake.lock b/tests/flake.lock
index 558576b..27e69dd 100644
--- a/tests/flake.lock
+++ b/tests/flake.lock
@@ -2,16 +2,16 @@
   "nodes": {
     "nixos-stable": {
       "locked": {
-        "lastModified": 1761597516,
-        "narHash": "sha256-wxX7u6D2rpkJLWkZ2E932SIvDJW8+ON/0Yy8+a5vsDU=",
+        "lastModified": 1767799921,
+        "narHash": "sha256-r4GVX+FToWVE2My8VVZH4V0pTIpnu2ZE8/Z4uxGEMBE=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "daf6dc47aa4b44791372d6139ab7b25269184d55",
+        "rev": "d351d0653aeb7877273920cd3e823994e7579b0b",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-25.05",
+        "ref": "nixos-25.11",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/tests/flake.nix b/tests/flake.nix
index 242c07b..1d192b9 100644
--- a/tests/flake.nix
+++ b/tests/flake.nix
@@ -3,7 +3,7 @@
 
   inputs = {
     nixos-unstable-small.url = "github:NixOS/nixpkgs/nixos-unstable-small";
-    nixos-stable.url = "github:NixOS/nixpkgs/nixos-25.05";
+    nixos-stable.url = "github:NixOS/nixpkgs/nixos-25.11";
     treefmt-nix.url = "github:numtide/treefmt-nix";
     treefmt-nix.inputs.nixpkgs.follows = "nixos-unstable-small";
   };