diff --git a/flake.nix b/flake.nix
index a95ee8e..728fb5e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,6 +7,8 @@
     # https://github.com/NixOS/nixpkgs
     nixpkgs.url = "github:nixos/nixpkgs/nixos-24.11";
 
+    nixpkgs-25-05.url = "github:nixos/nixpkgs/nixos-25.05";
+
     # Add nixos-generators as an input.
     # See here: https://github.com/nix-community/nixos-generators#using-in-a-flake
     nixos-generators = {
@@ -27,7 +29,7 @@
     };
   };
 
-  outputs = { self, nixpkgs, nixos-generators, sops-nix, authorizedKeysRepo, ... }:
+  outputs = { self, nixpkgs, nixpkgs-25-05, nixos-generators, sops-nix, authorizedKeysRepo, ... }:
     let
       specialArgs = {
         inherit authorizedKeysRepo;
@@ -160,7 +162,7 @@
           ];
         };
 
-        woodpecker = nixpkgs.lib.nixosSystem {
+        woodpecker = nixpkgs-25-05.lib.nixosSystem {
           inherit system specialArgs;
           modules = [
             self.nixosModules.common