diff --git a/.github/workflows/build-and-cache.yml b/.github/workflows/build-and-cache.yml
index f8ac172..10e173e 100644
--- a/.github/workflows/build-and-cache.yml
+++ b/.github/workflows/build-and-cache.yml
@@ -7,8 +7,13 @@ jobs:
     strategy:
       matrix:
         package:
-          - github:cything/nixpkgs/3bbe764179eb980831392a8dc76ad63722420737#gollum
-    runs-on: ubuntu-latest
+          - github:cything/nixpkgs/a9c7c4c52da181e7c66156c61b65c39f567efb41#gollum
+          - github:cything/nixpkgs/a9c7c4c52da181e7c66156c61b65c39f567efb41#gollum.tests
+          - github:cything/nixpkgs/e1e065c4bd58bef677474a828c4673c643f99545#schismtracker
+        os:
+          - ubuntu-latest
+          - macos-latest
+    runs-on: ${{ matrix.os }}
     steps:
       - uses: DeterminateSystems/nix-installer-action@main
         with: