diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 529a0fb6..a3668d70 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -49,7 +49,7 @@ jobs:
       # - uses: coverallsapp/github-action@master
       #   with:
       #     github-token: ${{ secrets.GITHUB_TOKEN }}
-      #     flag-name: run-${{ matrix.version }}-${{ github.run_id }}
+      #     flag-name: run-${{ matrix.os }}-${{ matrix.version }}-${{ github.run_id }}
       #     parallel: true
       #     path-to-lcov: ./lcov.info
       # Instead, we use a more tedious approach:
@@ -58,11 +58,11 @@ jobs:
       # - Upload only the merged coverage report to Coveralls
       - shell: bash
         run: |
-          cp ./lcov.info ./lcov-${{ matrix.version }}-${{ github.run_id }}.info
+          cp ./lcov.info ./lcov-${{ matrix.os }}-${{ matrix.version }}-${{ github.run_id }}.info
       - uses: actions/upload-artifact@v4
         with:
-          name: lcov-${{ matrix.version }}-${{ github.run_id }}
-          path: ./lcov-${{ matrix.version }}-${{ github.run_id }}.info
+          name: lcov-${{ matrix.os }}-${{ matrix.version }}-${{ github.run_id }}
+          path: ./lcov-${{ matrix.os }}-${{ matrix.version }}-${{ github.run_id }}.info
 
   finish:
     needs: test