diff --git a/searx/metrics/__init__.py b/searx/metrics/__init__.py
index 685db36ef..d078a7fcc 100644
--- a/searx/metrics/__init__.py
+++ b/searx/metrics/__init__.py
@@ -2,11 +2,13 @@
 # lint: pylint
 # pylint: disable=missing-module-docstring
 
-from typing import Dict, TypedDict, List, Optional, Any
 import math
 import contextlib
 from timeit import default_timer
 
+from typing import Dict, List, Optional, Any
+from typing_extensions import TypedDict
+
 from searx.engines import engines
 from .models import Histogram, HistogramStorage, CounterStorage, VoidHistogram, VoidCounterStorage
 from .error_recorder import count_error, count_exception, errors_per_engines