diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f5f20da2..eca2da68 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -187,7 +187,13 @@ jobs:
   macos:
     if: (github.event_name != 'schedule') || (github.repository == 'mstorsjo/llvm-mingw')
     needs: [prepare]
-    runs-on: macos-latest
+    strategy:
+      matrix:
+        runner:
+          - macos-latest
+          - macos-13
+          - macos-14
+    runs-on: ${{matrix.runner}}
     steps:
       - uses: actions/checkout@v4
       - name: Build
@@ -213,7 +219,7 @@ jobs:
           gtar -Jcf ../$NAME.tar.xz --format=ustar --numeric-owner --owner=0 --group=0 --sort=name --mtime="$BUILD_DATE" $NAME
       - uses: actions/upload-artifact@v4
         with:
-          name: macos-ucrt-toolchain
+          name: ${{matrix.runner}}-ucrt-toolchain
           path: |
             llvm-mingw-*.tar.xz
           retention-days: 7