diff --git a/flake.nix b/flake.nix
index 130d227..c04d387 100644
--- a/flake.nix
+++ b/flake.nix
@@ -656,7 +656,7 @@
       #   .outputs
       #   .disk-image;
 
-      pinephone = nixpkgs.lib.nixosSystem {
+      pinephone = nixpkgs-unstable.lib.nixosSystem {
         system = "aarch64-linux";
         modules = with nixosModules; [
           # TODO: how do I build this image?