diff --git a/stdlib/3/unittest/__init__.pyi b/stdlib/3/unittest/__init__.pyi
index 8f092994b..664948f6e 100644
--- a/stdlib/3/unittest/__init__.pyi
+++ b/stdlib/3/unittest/__init__.pyi
@@ -37,7 +37,7 @@ class TestCase:
     def setUpClass(cls) -> None: ...
     @classmethod
     def tearDownClass(cls) -> None: ...
-    def run(self, result: Optional[TestResult] = ...) -> TestCase: ...
+    def run(self, result: Optional[TestResult] = ...) -> Optional[TestResult]: ...
     def skipTest(self, reason: Any) -> None: ...
     def subTest(self, msg: Any = ..., **params: Any) -> ContextManager[None]: ...
     def debug(self) -> None: ...