diff --git a/.style.yapf b/.style.yapf
index d1467c347..04f2f0dfc 100644
--- a/.style.yapf
+++ b/.style.yapf
@@ -2,3 +2,4 @@
 based_on_style = pep8
 indent_dictionary_value = true
 split_before_named_assigns = false
+blank_line_before_nested_class_or_def = true