diff --git a/.github/workflows/run-tox-tests.yml b/.github/workflows/run-tox-tests.yml
index 6a8ed46..567c690 100644
--- a/.github/workflows/run-tox-tests.yml
+++ b/.github/workflows/run-tox-tests.yml
@@ -29,6 +29,7 @@ jobs:
           COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
           COVERALLS_PARALLEL: true
           COVERALLS_FLAG_NAME: py-${{ matrix.python-version }}-${{ matrix.os }}
+          PYTEST_ADDOPTS: --cov-config=pyproject.toml --cov --cov-append
   finish:
     runs-on: ubuntu-latest
     name: finish parallel build
diff --git a/tox.ini b/tox.ini
index 495697b..482e403 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,7 +16,6 @@ ignore = F841
 basepython =
     py38: python3.8
 python_files = tests/test_*.py
-# addopts = --cov-config=pyproject.toml --cov --cov-append
 timeout = 480
 
 [testenv:check]