diff --git a/pytest.ini b/pytest.ini
index bd7d0b52..69d95b26 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -20,3 +20,6 @@ filterwarnings=
 
 	# shopkeep/pytest-black#67
 	ignore:'encoding' argument not specified::pytest_black
+
+	# realpython/pytest-mypy#152
+	ignore:'encoding' argument not specified::pytest_mypy