diff --git a/requirements.txt b/requirements.txt
index 78b7d1142..80f0bdb47 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,6 +14,5 @@ httpx-socks[asyncio]==0.7.7
 setproctitle==1.3.3
 redis==5.0.2
 markdown-it-py==3.0.0
-typing_extensions==4.9.0
 fasttext-predict==0.9.2.2
 pytomlpp==1.0.13
diff --git a/searx/enginelib/traits.py b/searx/enginelib/traits.py
index 6402fde22..16e320e75 100644
--- a/searx/enginelib/traits.py
+++ b/searx/enginelib/traits.py
@@ -14,8 +14,7 @@ from __future__ import annotations
 import json
 import dataclasses
 import types
-from typing import Dict, Iterable, Union, Callable, Optional, TYPE_CHECKING
-from typing_extensions import Literal, Self
+from typing import Dict, Literal, Iterable, Union, Callable, TypeVar, Optional, TYPE_CHECKING
 
 from searx import locales
 from searx.data import data_dir, ENGINE_TRAITS
@@ -24,6 +23,9 @@ if TYPE_CHECKING:
     from . import Engine
 
 
+Self = TypeVar("Self", bound="EngineTraits")  # Python 3.11, to replace by typing.Self
+
+
 class EngineTraitsEncoder(json.JSONEncoder):
     """Encodes :class:`EngineTraits` to a serializable object, see
     :class:`json.JSONEncoder`."""
diff --git a/searx/search/checker/background.py b/searx/search/checker/background.py
index aec2a1790..f16e4c25c 100644
--- a/searx/search/checker/background.py
+++ b/searx/search/checker/background.py
@@ -8,8 +8,7 @@ import time
 import threading
 import os
 import signal
-from typing import Dict, Union, List, Any, Tuple, Optional
-from typing_extensions import TypedDict, Literal
+from typing import Any, Dict, List, Literal, Optional, Tuple, TypedDict, Union
 
 import redis.exceptions