diff --git a/stdlib/unittest/mock.pyi b/stdlib/unittest/mock.pyi
index a054d3c4c..1f554da52 100644
--- a/stdlib/unittest/mock.pyi
+++ b/stdlib/unittest/mock.pyi
@@ -47,7 +47,8 @@ else:
         "seal",
     )
 
-__version__: Final[str]
+if sys.version_info < (3, 9):
+    __version__: Final[str]
 
 FILTER_DIR: Any