diff --git a/.github/workflows/coverall.yml b/.github/workflows/coverall.yml
index 8828e3c..acb3512 100644
--- a/.github/workflows/coverall.yml
+++ b/.github/workflows/coverall.yml
@@ -45,6 +45,7 @@ jobs:
               uses: coverallsapp/github-action@master
               with:
                   github-token: ${{ secrets.GITHUB_TOKEN }}
+                  flag-name: run-${{ matrix.app }}
                   path-to-lcov: ./coverage/${{ matrix.app }}/lcov.info
                   parallel: true