diff --git a/stubs/redis/redis/utils.pyi b/stubs/redis/redis/utils.pyi
index 5180003bf..09f261095 100644
--- a/stubs/redis/redis/utils.pyi
+++ b/stubs/redis/redis/utils.pyi
@@ -1,3 +1,4 @@
+from collections.abc import Iterable, Mapping
 from contextlib import AbstractContextManager
 from typing import Any, TypeVar, overload
 from typing_extensions import Literal
@@ -14,11 +15,8 @@ def from_url(url: str, *, db: int = ..., decode_responses: Literal[True], **kwar
 @overload
 def from_url(url: str, *, db: int = ..., decode_responses: Literal[False] = ..., **kwargs: Any) -> Redis[bytes]: ...
 def pipeline(redis_obj: Redis[_StrType]) -> AbstractContextManager[Pipeline[_StrType]]: ...
-@overload
-def str_if_bytes(value: bytes) -> str: ...  # type: ignore[misc]
-@overload
-def str_if_bytes(value: _T) -> _T: ...
+def str_if_bytes(value: str | bytes) -> str: ...
 def safe_str(value: object) -> str: ...
-def dict_merge(*dicts): ...
-def list_keys_to_dict(key_list, callback): ...
-def merge_result(command, res): ...
+def dict_merge(*dicts: Mapping[str, _T]) -> dict[str, _T]: ...
+def list_keys_to_dict(key_list, callback): ...  # unused, alias for `dict.fromkeys`
+def merge_result(command: object, res: Mapping[Any, Iterable[_T]]) -> list[_T]: ...