diff --git a/api_core/setup.cfg b/api_core/setup.cfg
index 973b9433355e..581d8627f560 100644
--- a/api_core/setup.cfg
+++ b/api_core/setup.cfg
@@ -7,3 +7,4 @@ inputs =
     google/
 exclude =
     tests/
+output = pytype_output/