diff --git a/tox.ini b/tox.ini
index f748468..c907d68 100644
--- a/tox.ini
+++ b/tox.ini
@@ -25,7 +25,7 @@ deps =
     pytest-randomly
     click
 commands =
-    !py27: pytest {posargs: --cov --cov-append --cov-report=term-missing --cov-fail-under=100}
+    !py27: pytest {posargs: --cov --cov-config={toxinidir}/setup.cfg --cov-append --cov-report=term-missing --cov-fail-under=100}
     ; Bowler doesn't run on Python 2, so skip those tests
     py27: pytest --ignore {toxinidir}/tests/test_add.py --ignore {toxinidir}/tests/test_bowler.py []