diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d8404c6..7e4c6a7 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -16,3 +16,5 @@ jobs:
         authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
     # - run: nix build
     - run: nix flake check
+    - run: nix-build
+    - run: nix-shell -run "echo OK"