diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index 2715a51..f28a397 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -27,7 +27,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [windows-latest, ubuntu-latest, macOS-latest]
+        os: [windows-latest, ubuntu-latest, macOS-13]
 
     steps:
     - uses: actions/checkout@v2
@@ -75,6 +75,6 @@ jobs:
       if: always()
       uses: actions/upload-artifact@v4
       with:
-        name: test-output-files
+        name: test-output-files-${{ matrix.os }}-${{ matrix.version }}
         path: ${{github.workspace}}/tests/output/*.nif
         retention-days: 2