diff --git a/contextlib2/_typeshed.py b/contextlib2/_typeshed.py
index f05558d..80cdf3d 100644
--- a/contextlib2/_typeshed.py
+++ b/contextlib2/_typeshed.py
@@ -2,4 +2,4 @@ from typing import TypeVar
 
 # Use for "self" annotations:
 #   def __enter__(self: Self) -> Self: ...
-Self = TypeVar("Self")
+Self = TypeVar("Self")  # pragma: no cover