diff --git a/nixos/modules/installer/tools/tools.nix b/nixos/modules/installer/tools/tools.nix
index fb1f5612ad25..d0885bc9046c 100644
--- a/nixos/modules/installer/tools/tools.nix
+++ b/nixos/modules/installer/tools/tools.nix
@@ -79,7 +79,7 @@ let
         # If you prefer a stable release instead, you can change the word unstable to the latest number shown here: https://nixos.org/download
         # i.e. nixos-24.11
         # Use `nix flake update` to update the flake to the latest revision of the chosen release channel.
-        nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+        nixpkgs.url = "https://channels.nixos.org/nixos-unstable/nixexprs.tar.zst";
       };
       outputs = inputs\@{ self, nixpkgs, ... }: {
         # NOTE: '${options.networking.hostName.default}' is the default hostname