diff --git a/tox.ini b/tox.ini
index 9757b0983..95c49db04 100644
--- a/tox.ini
+++ b/tox.ini
@@ -131,6 +131,7 @@ filterwarnings =
     ignore:yield tests are deprecated, and scheduled to be removed in pytest 4.0:pytest.RemovedInPytest4Warning
     ignore:Metafunc.addcall is deprecated and scheduled to be removed in pytest 4.0:pytest.RemovedInPytest4Warning
     ignore::pytest.RemovedInPytest4Warning
+    default:Using or importing the ABCs:DeprecationWarning:unittest2.*
     ignore:Module already imported so cannot be rewritten:pytest.PytestWarning
     # produced by path.local
     ignore:bad escape.*:DeprecationWarning:re