diff --git a/client/pyproject.toml b/client/pyproject.toml
index f6e3875f..c3a2046d 100644
--- a/client/pyproject.toml
+++ b/client/pyproject.toml
@@ -22,6 +22,7 @@ dependencies = [
   "pyaes~=1.6",
   "rsa~=4.9",
   "markdown-it-py~=3.0",
+  "typing-extensions~=4.12.2",
 ]
 dynamic = ["version"]
 
diff --git a/client/src/telethon/_impl/client/client/bots.py b/client/src/telethon/_impl/client/client/bots.py
index f8de14fc..fc5f42a8 100644
--- a/client/src/telethon/_impl/client/client/bots.py
+++ b/client/src/telethon/_impl/client/client/bots.py
@@ -1,7 +1,9 @@
 from __future__ import annotations
 
 from collections.abc import AsyncIterator
-from typing import TYPE_CHECKING, Optional, Self
+from typing import TYPE_CHECKING, Optional
+
+from typing_extensions import Self
 
 from ...session import PeerRef, UserRef
 from ...tl import abcs, functions, types
diff --git a/client/src/telethon/_impl/client/client/client.py b/client/src/telethon/_impl/client/client/client.py
index fd9cd1f9..3f2c5f23 100644
--- a/client/src/telethon/_impl/client/client/client.py
+++ b/client/src/telethon/_impl/client/client/client.py
@@ -4,7 +4,9 @@ import logging
 from collections.abc import AsyncIterator, Awaitable, Callable
 from pathlib import Path
 from types import TracebackType
-from typing import Any, Literal, Optional, Self, Sequence, Type, TypeVar
+from typing import Any, Literal, Optional, Sequence, Type, TypeVar
+
+from typing_extensions import Self
 
 from ....version import __version__ as default_version
 from ...mtsender import Connector, Sender
diff --git a/client/src/telethon/_impl/client/client/messages.py b/client/src/telethon/_impl/client/client/messages.py
index e19aee63..428993a7 100644
--- a/client/src/telethon/_impl/client/client/messages.py
+++ b/client/src/telethon/_impl/client/client/messages.py
@@ -2,7 +2,9 @@ from __future__ import annotations
 
 import datetime
 import sys
-from typing import TYPE_CHECKING, Literal, Optional, Self
+from typing import TYPE_CHECKING, Literal, Optional
+
+from typing_extensions import Self
 
 from ...session import ChannelRef, PeerRef
 from ...tl import abcs, functions, types
diff --git a/client/src/telethon/_impl/client/events/event.py b/client/src/telethon/_impl/client/events/event.py
index 3fae19ec..c2632d06 100644
--- a/client/src/telethon/_impl/client/events/event.py
+++ b/client/src/telethon/_impl/client/events/event.py
@@ -1,7 +1,9 @@
 from __future__ import annotations
 
 import abc
-from typing import TYPE_CHECKING, Optional, Self
+from typing import TYPE_CHECKING, Optional
+
+from typing_extensions import Self
 
 from ...tl import abcs
 from ..types import NoPublicConstructor, Peer
diff --git a/client/src/telethon/_impl/client/events/messages.py b/client/src/telethon/_impl/client/events/messages.py
index 65cf42de..bb76f5e5 100644
--- a/client/src/telethon/_impl/client/events/messages.py
+++ b/client/src/telethon/_impl/client/events/messages.py
@@ -1,6 +1,8 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Optional, Self, Sequence
+from typing import TYPE_CHECKING, Optional, Sequence
+
+from typing_extensions import Self
 
 from ...tl import abcs, types
 from ..types import Message, Peer, expand_peer, peer_id
diff --git a/client/src/telethon/_impl/client/events/queries.py b/client/src/telethon/_impl/client/events/queries.py
index 3736d9a4..842d9345 100644
--- a/client/src/telethon/_impl/client/events/queries.py
+++ b/client/src/telethon/_impl/client/events/queries.py
@@ -1,6 +1,8 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Optional, Self
+from typing import TYPE_CHECKING, Optional
+
+from typing_extensions import Self
 
 from ...session import PeerRef
 from ...tl import abcs, functions, types
diff --git a/client/src/telethon/_impl/client/types/async_list.py b/client/src/telethon/_impl/client/types/async_list.py
index 560a4c86..d5e4a986 100644
--- a/client/src/telethon/_impl/client/types/async_list.py
+++ b/client/src/telethon/_impl/client/types/async_list.py
@@ -1,7 +1,9 @@
 import abc
 from collections import deque
 from collections.abc import Generator
-from typing import Any, Generic, Self, TypeVar
+from typing import Any, Generic, TypeVar
+
+from typing_extensions import Self
 
 T = TypeVar("T")
 
diff --git a/client/src/telethon/_impl/client/types/dialog.py b/client/src/telethon/_impl/client/types/dialog.py
index 673fbf78..a9b9b236 100644
--- a/client/src/telethon/_impl/client/types/dialog.py
+++ b/client/src/telethon/_impl/client/types/dialog.py
@@ -1,6 +1,8 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Optional, Self
+from typing import TYPE_CHECKING, Optional
+
+from typing_extensions import Self
 
 from ...tl import abcs, types
 from .draft import Draft
diff --git a/client/src/telethon/_impl/client/types/draft.py b/client/src/telethon/_impl/client/types/draft.py
index 9368044d..42c68905 100644
--- a/client/src/telethon/_impl/client/types/draft.py
+++ b/client/src/telethon/_impl/client/types/draft.py
@@ -1,7 +1,9 @@
 from __future__ import annotations
 
 import datetime
-from typing import TYPE_CHECKING, Optional, Self
+from typing import TYPE_CHECKING, Optional
+
+from typing_extensions import Self
 
 from ...session import PeerRef
 from ...tl import abcs, functions, types
diff --git a/client/src/telethon/_impl/client/types/file.py b/client/src/telethon/_impl/client/types/file.py
index 566e4aa4..2072f489 100644
--- a/client/src/telethon/_impl/client/types/file.py
+++ b/client/src/telethon/_impl/client/types/file.py
@@ -6,7 +6,9 @@ from collections.abc import Coroutine
 from inspect import isawaitable
 from io import BufferedWriter
 from pathlib import Path
-from typing import TYPE_CHECKING, Any, Optional, Protocol, Self, Sequence
+from typing import TYPE_CHECKING, Any, Optional, Protocol, Sequence
+
+from typing_extensions import Self
 
 from ...tl import abcs, types
 from .meta import NoPublicConstructor
diff --git a/client/src/telethon/_impl/client/types/forward_info.py b/client/src/telethon/_impl/client/types/forward_info.py
index 5a2976e1..cdcda117 100644
--- a/client/src/telethon/_impl/client/types/forward_info.py
+++ b/client/src/telethon/_impl/client/types/forward_info.py
@@ -1,4 +1,4 @@
-from typing import Self
+from typing_extensions import Self
 
 from ...tl import types
 from .meta import NoPublicConstructor
diff --git a/client/src/telethon/_impl/client/types/keyboard.py b/client/src/telethon/_impl/client/types/keyboard.py
index d560463c..3329bb30 100644
--- a/client/src/telethon/_impl/client/types/keyboard.py
+++ b/client/src/telethon/_impl/client/types/keyboard.py
@@ -30,6 +30,7 @@ class Keyboard:
     def __init__(
         self,
         buttons: list[AnyButton] | list[list[AnyButton]],
+        *,
         resize: bool,
         single_use: bool,
         selective: bool,
@@ -55,4 +56,24 @@ class InlineKeyboard:
         self._raw = types.ReplyInlineMarkup(rows=_build_keyboard_rows(buttons))
 
 
-KeyboardType: TypeAlias = Keyboard | InlineKeyboard
+class HiddenKeyboard:
+    __slots__ = ("_raw",)
+
+    def __init__(self, *, selective: bool) -> None:
+        self._raw = types.ReplyKeyboardHide(selective=selective)
+
+
+class ForcedReplyKeyboard:
+    __slots__ = ("_raw",)
+
+    def __init__(
+        self, *, single_use: bool, selective: bool, placeholder: Optional[str]
+    ) -> None:
+        self._raw = types.ReplyKeyboardForceReply(
+            single_use=single_use, selective=selective, placeholder=placeholder
+        )
+
+
+KeyboardType: TypeAlias = (
+    Keyboard | InlineKeyboard | HiddenKeyboard | ForcedReplyKeyboard
+)
diff --git a/client/src/telethon/_impl/client/types/link_preview.py b/client/src/telethon/_impl/client/types/link_preview.py
index 2b9b3684..cb8541cb 100644
--- a/client/src/telethon/_impl/client/types/link_preview.py
+++ b/client/src/telethon/_impl/client/types/link_preview.py
@@ -1,4 +1,4 @@
-from typing import Self
+from typing_extensions import Self
 
 from ...tl import types
 from .meta import NoPublicConstructor
diff --git a/client/src/telethon/_impl/client/types/login_token.py b/client/src/telethon/_impl/client/types/login_token.py
index afd33087..9b39cb67 100644
--- a/client/src/telethon/_impl/client/types/login_token.py
+++ b/client/src/telethon/_impl/client/types/login_token.py
@@ -1,4 +1,6 @@
-from typing import Optional, Self
+from typing import Optional
+
+from typing_extensions import Self
 
 from ...tl import types
 from .meta import NoPublicConstructor
diff --git a/client/src/telethon/_impl/client/types/message.py b/client/src/telethon/_impl/client/types/message.py
index 4d37263d..62bd4ccf 100644
--- a/client/src/telethon/_impl/client/types/message.py
+++ b/client/src/telethon/_impl/client/types/message.py
@@ -2,7 +2,9 @@ from __future__ import annotations
 
 import datetime
 import time
-from typing import TYPE_CHECKING, Any, Optional, Self, Sequence, cast
+from typing import TYPE_CHECKING, Any, Optional, Sequence, cast
+
+from typing_extensions import Self
 
 from ...session import PeerRef
 from ...tl import abcs, types
diff --git a/client/src/telethon/_impl/client/types/participant.py b/client/src/telethon/_impl/client/types/participant.py
index ce7937b5..80013534 100644
--- a/client/src/telethon/_impl/client/types/participant.py
+++ b/client/src/telethon/_impl/client/types/participant.py
@@ -1,7 +1,9 @@
 from __future__ import annotations
 
 import datetime
-from typing import TYPE_CHECKING, Optional, Self, Sequence
+from typing import TYPE_CHECKING, Optional, Sequence
+
+from typing_extensions import Self
 
 from ...session import ChannelRef, GroupRef
 from ...tl import abcs, types
diff --git a/client/src/telethon/_impl/client/types/password_token.py b/client/src/telethon/_impl/client/types/password_token.py
index cfcf4365..a3ca1be3 100644
--- a/client/src/telethon/_impl/client/types/password_token.py
+++ b/client/src/telethon/_impl/client/types/password_token.py
@@ -1,4 +1,4 @@
-from typing import Self
+from typing_extensions import Self
 
 from ...tl import types
 from .meta import NoPublicConstructor
diff --git a/client/src/telethon/_impl/client/types/peer/channel.py b/client/src/telethon/_impl/client/types/peer/channel.py
index 069b0040..56ff94dd 100644
--- a/client/src/telethon/_impl/client/types/peer/channel.py
+++ b/client/src/telethon/_impl/client/types/peer/channel.py
@@ -1,4 +1,6 @@
-from typing import Optional, Self
+from typing import Optional
+
+from typing_extensions import Self
 
 from ....session import ChannelRef
 from ....tl import abcs, types
diff --git a/client/src/telethon/_impl/client/types/peer/group.py b/client/src/telethon/_impl/client/types/peer/group.py
index 5dce7ef3..9a41083d 100644
--- a/client/src/telethon/_impl/client/types/peer/group.py
+++ b/client/src/telethon/_impl/client/types/peer/group.py
@@ -1,7 +1,9 @@
 from __future__ import annotations
 
 import datetime
-from typing import TYPE_CHECKING, Optional, Self, Sequence
+from typing import TYPE_CHECKING, Optional, Sequence
+
+from typing_extensions import Self
 
 from ....session import ChannelRef, GroupRef
 from ....tl import abcs, types
diff --git a/client/src/telethon/_impl/client/types/peer/user.py b/client/src/telethon/_impl/client/types/peer/user.py
index 8ae92273..912c48ea 100644
--- a/client/src/telethon/_impl/client/types/peer/user.py
+++ b/client/src/telethon/_impl/client/types/peer/user.py
@@ -1,4 +1,6 @@
-from typing import Optional, Self
+from typing import Optional
+
+from typing_extensions import Self
 
 from ....session import UserRef
 from ....tl import abcs, types
diff --git a/client/src/telethon/_impl/crypto/auth_key.py b/client/src/telethon/_impl/crypto/auth_key.py
index f2c2cdc7..90afc306 100644
--- a/client/src/telethon/_impl/crypto/auth_key.py
+++ b/client/src/telethon/_impl/crypto/auth_key.py
@@ -1,6 +1,7 @@
 from dataclasses import dataclass
 from hashlib import sha1
-from typing import Self
+
+from typing_extensions import Self
 
 
 @dataclass
diff --git a/client/src/telethon/_impl/mtproto/mtp/types.py b/client/src/telethon/_impl/mtproto/mtp/types.py
index 0dc23378..0f624c7c 100644
--- a/client/src/telethon/_impl/mtproto/mtp/types.py
+++ b/client/src/telethon/_impl/mtproto/mtp/types.py
@@ -1,7 +1,9 @@
 import logging
 import re
 from abc import ABC, abstractmethod
-from typing import NewType, Optional, Self
+from typing import NewType, Optional
+
+from typing_extensions import Self
 
 from ...tl.mtproto.types import RpcError as GeneratedRpcError
 
diff --git a/client/src/telethon/_impl/mtsender/sender.py b/client/src/telethon/_impl/mtsender/sender.py
index 2cbb2ce8..72e1652a 100644
--- a/client/src/telethon/_impl/mtsender/sender.py
+++ b/client/src/telethon/_impl/mtsender/sender.py
@@ -6,7 +6,9 @@ from abc import ABC
 from asyncio import FIRST_COMPLETED, Event, Future
 from collections.abc import Iterator
 from dataclasses import dataclass
-from typing import Generic, Optional, Protocol, Self, Type, TypeVar
+from typing import Generic, Optional, Protocol, Type, TypeVar
+
+from typing_extensions import Self
 
 from ..crypto import AuthKey
 from ..mtproto import (
diff --git a/client/src/telethon/_impl/session/chat/peer_ref.py b/client/src/telethon/_impl/session/chat/peer_ref.py
index 9752e1de..eee2f839 100644
--- a/client/src/telethon/_impl/session/chat/peer_ref.py
+++ b/client/src/telethon/_impl/session/chat/peer_ref.py
@@ -4,7 +4,9 @@ import abc
 import base64
 import re
 import struct
-from typing import Optional, Self, TypeAlias
+from typing import Optional, TypeAlias
+
+from typing_extensions import Self
 
 from ...tl import abcs, types
 
diff --git a/client/src/telethon/_impl/tl/core/serializable.py b/client/src/telethon/_impl/tl/core/serializable.py
index 8af4e56c..d912649d 100644
--- a/client/src/telethon/_impl/tl/core/serializable.py
+++ b/client/src/telethon/_impl/tl/core/serializable.py
@@ -1,6 +1,8 @@
 import abc
 import struct
-from typing import Protocol, Self
+from typing import Protocol
+
+from typing_extensions import Self
 
 from .reader import Reader
 
diff --git a/generator/pyproject.toml b/generator/pyproject.toml
index 84be3cbd..ec85efaa 100644
--- a/generator/pyproject.toml
+++ b/generator/pyproject.toml
@@ -20,7 +20,7 @@ classifiers = [
     "Typing :: Typed",
 ]
 dynamic = ["version"]
-
+dependencies = ["typing-extensions~=4.12.2"]
 [project.optional-dependencies]
 dev = ["pytest~=7.3"]
 
diff --git a/generator/src/telethon_generator/_impl/codegen/generator.py b/generator/src/telethon_generator/_impl/codegen/generator.py
index d3fbe128..713318a9 100644
--- a/generator/src/telethon_generator/_impl/codegen/generator.py
+++ b/generator/src/telethon_generator/_impl/codegen/generator.py
@@ -97,7 +97,8 @@ def generate(fs: FakeFs, tl: ParsedTl) -> None:
                 "# pyright: reportUnusedImport=false, reportConstantRedefinition=false"
             )
             writer.write("import struct")
-            writer.write("from typing import Optional, Self, Sequence")
+            writer.write("from typing import Optional, Sequence")
+            writer.write("from typing_extensions import Self")
             writer.write("from .. import abcs")
             writer.write("from ..core import Reader, Serializable, serialize_bytes_to")
             writer.write("_bytes = bytes | bytearray | memoryview")
@@ -163,7 +164,8 @@ def generate(fs: FakeFs, tl: ParsedTl) -> None:
         if function_path not in fs:
             writer.write("# pyright: reportUnusedImport=false")
             writer.write("import struct")
-            writer.write("from typing import Optional, Self, Sequence")
+            writer.write("from typing import Optional, Sequence")
+            writer.write("from typing_extensions import Self")
             writer.write("from .. import abcs")
             writer.write("from ..core import Request, serialize_bytes_to")
             writer.write("_bytes = bytes | bytearray | memoryview")
@@ -192,14 +194,14 @@ def generate(fs: FakeFs, tl: ParsedTl) -> None:
     writer.write(
         "from .core import Serializable, Reader, deserialize_bool, deserialize_i32_list, deserialize_i64_list, deserialize_identity, single_deserializer, list_deserializer"
     )
-    writer.write("from typing import cast, Type")
+    writer.write("from typing import Final, Type")
     writer.write(f"LAYER = {tl.layer!r}")
     writer.write(
-        "TYPE_MAPPING = {t.constructor_id(): t for t in cast(tuple[Type[Serializable]], ("
+        "TYPE_MAPPING: Final[dict[int, Type[Serializable]]] = {t.constructor_id(): t for t in ("
     )
     for name in sorted(generated_type_names):
         writer.write(f"  types.{name},")
-    writer.write("))}")
+    writer.write(")}")
     writer.write("RESPONSE_MAPPING = {")
     for functiondef in tl.functiondefs:
         writer.write(
diff --git a/generator/src/telethon_generator/_impl/tl_parser/tl/definition.py b/generator/src/telethon_generator/_impl/tl_parser/tl/definition.py
index cb234740..731b977c 100644
--- a/generator/src/telethon_generator/_impl/tl_parser/tl/definition.py
+++ b/generator/src/telethon_generator/_impl/tl_parser/tl/definition.py
@@ -1,5 +1,6 @@
 from dataclasses import dataclass
-from typing import Self
+
+from typing_extensions import Self
 
 from ..utils import infer_id
 from .parameter import Parameter, TypeDefNotImplementedError
diff --git a/generator/src/telethon_generator/_impl/tl_parser/tl/flag.py b/generator/src/telethon_generator/_impl/tl_parser/tl/flag.py
index 23a39c1f..c5dcbd88 100644
--- a/generator/src/telethon_generator/_impl/tl_parser/tl/flag.py
+++ b/generator/src/telethon_generator/_impl/tl_parser/tl/flag.py
@@ -1,5 +1,6 @@
 from dataclasses import dataclass
-from typing import Self
+
+from typing_extensions import Self
 
 
 @dataclass
diff --git a/generator/src/telethon_generator/_impl/tl_parser/tl/parameter.py b/generator/src/telethon_generator/_impl/tl_parser/tl/parameter.py
index 7c204623..2f44403a 100644
--- a/generator/src/telethon_generator/_impl/tl_parser/tl/parameter.py
+++ b/generator/src/telethon_generator/_impl/tl_parser/tl/parameter.py
@@ -1,5 +1,6 @@
 from dataclasses import dataclass
-from typing import Self
+
+from typing_extensions import Self
 
 from .parameter_type import BaseParameter
 
diff --git a/generator/src/telethon_generator/_impl/tl_parser/tl/ty.py b/generator/src/telethon_generator/_impl/tl_parser/tl/ty.py
index b12d86d4..9f131914 100644
--- a/generator/src/telethon_generator/_impl/tl_parser/tl/ty.py
+++ b/generator/src/telethon_generator/_impl/tl_parser/tl/ty.py
@@ -1,6 +1,8 @@
 from collections.abc import Iterator
 from dataclasses import dataclass
-from typing import Optional, Self
+from typing import Optional
+
+from typing_extensions import Self
 
 
 @dataclass