diff --git a/django-stubs/utils/functional.pyi b/django-stubs/utils/functional.pyi
index e00f00cd86..9480ecdd9f 100644
--- a/django-stubs/utils/functional.pyi
+++ b/django-stubs/utils/functional.pyi
@@ -1,8 +1,9 @@
 import sys
 from functools import wraps as wraps  # noqa: F401
-from typing import Any, Callable, Generic, List, Optional, Tuple, Type, TypeVar, Union, overload
+from typing import Any, Callable, Generic, List, Optional, Sequence, Tuple, Type, TypeVar, Union, overload
 
 from django.db.models.base import Model
+from typing_extensions import SupportsIndex
 
 if sys.version_info < (3, 8):
     from typing_extensions import Protocol
@@ -31,10 +32,24 @@ class Promise:
     def __radd__(self, other: Any) -> Any: ...
     def __deepcopy__(self, memo: Any): ...
 
+class _StrPromise(Promise, Sequence[str]):
+    def __add__(self, __s: str) -> str: ...
+    # Incompatible with Sequence.__contains__
+    def __contains__(self, __o: str) -> bool: ...  # type: ignore[override]
+    def __ge__(self, __x: str) -> bool: ...
+    def __getitem__(self, __i: SupportsIndex | slice) -> str: ...
+    def __gt__(self, __x: str) -> bool: ...
+    def __le__(self, __x: str) -> bool: ...
+    def __lt__(self, __x: str) -> bool: ...
+    def __mod__(self, __x: Any) -> str: ...
+    def __mul__(self, __n: SupportsIndex) -> str: ...
+    def __rmul__(self, __n: SupportsIndex) -> str: ...
+    def __getnewargs__(self) -> tuple[str]: ...
+
 _C = TypeVar("_C", bound=Callable)
 
 def lazy(func: _C, *resultclasses: Any) -> _C: ...
-def lazystr(text: Any) -> str: ...
+def lazystr(text: Any) -> _StrPromise: ...
 def keep_lazy(*resultclasses: Any) -> Callable: ...
 def keep_lazy_text(func: Callable) -> Callable: ...
 
diff --git a/django-stubs/utils/translation/__init__.pyi b/django-stubs/utils/translation/__init__.pyi
index cd9d50d01b..d82de72c9a 100644
--- a/django-stubs/utils/translation/__init__.pyi
+++ b/django-stubs/utils/translation/__init__.pyi
@@ -4,7 +4,7 @@ from contextlib import ContextDecorator
 from typing import Any, Callable, Optional, Type, Union
 
 from django.http.request import HttpRequest
-from django.utils.functional import Promise
+from django.utils.functional import _StrPromise
 
 LANGUAGE_SESSION_KEY: str
 
@@ -33,10 +33,10 @@ def pgettext(context: str, message: str) -> str: ...
 def npgettext(context: str, singular: str, plural: str, number: int) -> str: ...
 
 # lazy evaluated translation functions
-def gettext_lazy(message: str) -> Promise: ...
-def pgettext_lazy(context: str, message: str) -> Promise: ...
-def ngettext_lazy(singular: str, plural: str, number: Union[int, str, None] = ...) -> Promise: ...
-def npgettext_lazy(context: str, singular: str, plural: str, number: Union[int, str, None] = ...) -> Promise: ...
+def gettext_lazy(message: str) -> _StrPromise: ...
+def pgettext_lazy(context: str, message: str) -> _StrPromise: ...
+def ngettext_lazy(singular: str, plural: str, number: Union[int, str, None] = ...) -> _StrPromise: ...
+def npgettext_lazy(context: str, singular: str, plural: str, number: Union[int, str, None] = ...) -> _StrPromise: ...
 
 # NOTE: These translation functions are deprecated and removed in Django 4.0. We should remove them when we drop
 # support for 3.2