diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index db3998be..092ff980 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -106,7 +106,7 @@ jobs:
         brew install coveralls --quiet
         ls -lh .coverage
         ls -lh coverage.xml
-        coveralls report -f coverage.xml --verbose --parallel --repo-token=${{ secrets.COVERALLS_REPO_TOKEN }} --build-number ${{ github.run_number }}
+        coveralls report coverage.xml --format=cobertura --verbose --parallel --repo-token=${{ secrets.COVERALLS_REPO_TOKEN }} --build-number ${{ github.run_number }}
 
   finish:
     name: Finish Coverage Analysis