diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 4778a06..b336c2f 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -16,4 +16,4 @@ jobs:
       - uses: cachix/install-nix-action@v18
       - name: Test
         run: |
-          nix flake check -L
+          nix flake check -L -j auto