diff --git a/tox.ini b/tox.ini
index e88542de..17bdaff3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -23,7 +23,7 @@ commands = pytest -c tests/.configs/pytest.ini
 python_files = test_*_py3*.py
 
 [testenv:coveralls]
-passenv = GITHUB_* COVERALLS_*
+passenv = GITHUB_*, COVERALLS_*
 basepython=python3.11
 usedevelop=True
 deps=