diff --git a/stdlib/3/traceback.pyi b/stdlib/3/traceback.pyi
index 21c256496..8c5e781fa 100644
--- a/stdlib/3/traceback.pyi
+++ b/stdlib/3/traceback.pyi
@@ -1,6 +1,6 @@
 # Stubs for traceback
 
-from types import TracebackType
+from types import List, TracebackType
 import typing
 
 # TODO signatures