diff --git a/python/typing.py b/python/typing.py
index a0b8899d..cac5e480 100644
--- a/python/typing.py
+++ b/python/typing.py
@@ -18,6 +18,7 @@ Union = _PLACEHOLDER
 Optional = _PLACEHOLDER
 Callable = _PLACEHOLDER
 Type = _PLACEHOLDER
+Protocol = _PLACEHOLDER
 
 Iterable = _PLACEHOLDER
 Generator = _PLACEHOLDER