diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ca96545..cce5071 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -44,5 +44,5 @@ jobs:
           nix_path: nixpkgs=channel:nixos-unstable
       - name: "Build host"
         run: |
-          nixos-rebuild build --flake ".#${{ matrix.hostname }}"
+          nix build ".#nixosConfigurations.${{ matrix.hostname }}.config.system.build.toplevel"