diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index b6d2ec7..e95e827 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -4,8 +4,11 @@ on:
   push:
 jobs:
   tests:
-    runs-on: ubuntu-20.04
+    runs-on: [ ubuntu-20.04, macos-11 ]
     steps:
     - uses: actions/checkout@v2.3.4
     - uses: cachix/install-nix-action@v15
+      with:
+        extra_nix_config: "system-features = nixos-test benchmark big-parallel kvm"
+    - run: nix build
     - run: nix flake check