diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ee57485..336cd65 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -18,6 +18,7 @@ jobs:
           name: traxys
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
       - run: >
+          export NIXPKGS_ALLOW_UNFREE=1
           nix flake show --json |
           jq -r '.packages."x86_64-linux" | keys | .[]' | 
-          xargs -I'{}' nix build '.#{}'
+          xargs -I'{}' nix build --impure '.#{}'