diff --git a/stdlib/unittest/case.pyi b/stdlib/unittest/case.pyi
index e3c23f8e9..40636b872 100644
--- a/stdlib/unittest/case.pyi
+++ b/stdlib/unittest/case.pyi
@@ -9,7 +9,6 @@ from typing import (
     Callable,
     Container,
     ContextManager,
-    Dict,
     FrozenSet,
     Generic,
     Iterable,
@@ -183,7 +182,7 @@ class TestCase:
     def assertSetEqual(
         self, set1: Union[Set[Any], FrozenSet[Any]], set2: Union[Set[Any], FrozenSet[Any]], msg: Any = ...
     ) -> None: ...
-    def assertDictEqual(self, d1: Dict[Any, Any], d2: Dict[Any, Any], msg: Any = ...) -> None: ...
+    def assertDictEqual(self, d1: Mapping[Any, object], d2: Mapping[Any, object], msg: Any = ...) -> None: ...
     def fail(self, msg: Any = ...) -> NoReturn: ...
     def countTestCases(self) -> int: ...
     def defaultTestResult(self) -> unittest.result.TestResult: ...