diff --git a/pyproject.toml b/pyproject.toml
index 7ecbbe5f4f..e23f896fd4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,6 +27,7 @@ select = [
   "F",  # pyflakes
   "I",  # isort
   "YTT",  # flake8-2020
+  "PYI",  # flake8-pyi
 ]
 extend-ignore = [
     'F403',  # undefined-local-with-import-star