diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1e2421e7..13712bf5 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -29,4 +29,4 @@ jobs:
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
       - run: nix build --show-trace
       - name: building home-manager profile
-        run: ./result/bin/home-manager build --flake .#william -b bak
+        run: ./result/bin/home-manager build --flake .#william --option extra-substituters ""