diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index c53589e..bc8719c 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -23,4 +23,10 @@ jobs:
       - run: nix flake check --accept-flake-config
         # Pre-build the system configuration
       - run: nix build --accept-flake-config --dry-run .#nixosConfigurations.${{ matrix.target-system }}.config.system.build.toplevel
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: cachix/install-nix-action@v16
+      - run: nix shell nixpkgs#alejandra -c alejandra -c .