diff --git a/diceplayer/config/dice_config.py b/diceplayer/config/dice_config.py
index 907d5bf..a50ed5d 100644
--- a/diceplayer/config/dice_config.py
+++ b/diceplayer/config/dice_config.py
@@ -1,9 +1,9 @@
 from diceplayer.shared.utils.dataclass_protocol import Dataclass
 
 from pydantic import BaseModel, Field
+from typing_extensions import List, Literal
 
 from dataclasses import dataclass, fields
-from typing import List, Literal
 
 
 class DiceConfig(BaseModel):
diff --git a/diceplayer/config/gaussian_config.py b/diceplayer/config/gaussian_config.py
index bc741b2..72c6c9d 100644
--- a/diceplayer/config/gaussian_config.py
+++ b/diceplayer/config/gaussian_config.py
@@ -1,9 +1,9 @@
 from diceplayer.shared.utils.dataclass_protocol import Dataclass
 
 from pydantic import BaseModel, Field
+from typing_extensions import Literal
 
 from dataclasses import dataclass, fields
-from typing import Literal
 
 
 class GaussianConfig(BaseModel):
diff --git a/diceplayer/config/player_config.py b/diceplayer/config/player_config.py
index 1ec4993..da14432 100644
--- a/diceplayer/config/player_config.py
+++ b/diceplayer/config/player_config.py
@@ -3,10 +3,10 @@ from diceplayer.config.gaussian_config import GaussianConfig
 from diceplayer.shared.utils.dataclass_protocol import Dataclass
 
 from pydantic import BaseModel, Field, field_validator, model_validator
+from typing_extensions import Self
 
 from dataclasses import dataclass, fields
 from pathlib import Path
-from typing import Self
 
 MIN_STEP = 20000
 
diff --git a/diceplayer/player.py b/diceplayer/player.py
index 5aa2f5b..e4cb5e0 100644
--- a/diceplayer/player.py
+++ b/diceplayer/player.py
@@ -13,12 +13,12 @@ from diceplayer.shared.utils.ptable import atomsymb
 
 import yaml
 from pydantic import BaseModel
+from typing_extensions import Tuple, Type
 
 import os
 import pickle
 import sys
 from pathlib import Path
-from typing import Tuple, Type
 
 ENV = ["OMP_STACKSIZE"]
 
diff --git a/diceplayer/shared/environment/molecule.py b/diceplayer/shared/environment/molecule.py
index e4003b4..28571c7 100644
--- a/diceplayer/shared/environment/molecule.py
+++ b/diceplayer/shared/environment/molecule.py
@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing_extensions import TYPE_CHECKING
 
 if TYPE_CHECKING:
     from nptyping import Float, NDArray, Shape
@@ -12,10 +12,10 @@ from diceplayer.shared.utils.ptable import ghost_number
 
 import numpy as np
 from numpy.linalg import linalg
+from typing_extensions import Any, List, Tuple, Union
 
 import math
 from copy import deepcopy
-from typing import Any, List, Tuple, Union
 
 
 class Molecule:
diff --git a/diceplayer/shared/environment/system.py b/diceplayer/shared/environment/system.py
index f8e5dd8..8610a00 100644
--- a/diceplayer/shared/environment/system.py
+++ b/diceplayer/shared/environment/system.py
@@ -5,10 +5,10 @@ from diceplayer.shared.utils.ptable import atomsymb
 
 import numpy as np
 from numpy import linalg
+from typing_extensions import List, TextIO, Tuple
 
 import math
 from copy import deepcopy
-from typing import List, TextIO, Tuple
 
 
 class System:
diff --git a/diceplayer/shared/interface/dice_interface.py b/diceplayer/shared/interface/dice_interface.py
index c13ef63..36c852f 100644
--- a/diceplayer/shared/interface/dice_interface.py
+++ b/diceplayer/shared/interface/dice_interface.py
@@ -6,6 +6,7 @@ from diceplayer.shared.environment.system import System
 from diceplayer.shared.interface import Interface
 
 from setproctitle import setproctitle
+from typing_extensions import Final, TextIO
 
 import os
 import random
@@ -15,7 +16,6 @@ import sys
 import time
 from multiprocessing import Process, connection
 from pathlib import Path
-from typing import Final, TextIO
 
 DICE_END_FLAG: Final[str] = "End of simulation"
 DICE_FLAG_LINE: Final[int] = -2
diff --git a/diceplayer/shared/interface/gaussian_interface.py b/diceplayer/shared/interface/gaussian_interface.py
index 73b372a..be203f7 100644
--- a/diceplayer/shared/interface/gaussian_interface.py
+++ b/diceplayer/shared/interface/gaussian_interface.py
@@ -11,13 +11,13 @@ from diceplayer.shared.utils.ptable import atomsymb
 
 import numpy as np
 from nptyping import NDArray
+from typing_extensions import Any, Dict, List, Tuple
 
 import os
 import shutil
 import subprocess
 import textwrap
 from pathlib import Path
-from typing import Any, Dict, List, Tuple
 
 
 class GaussianInterface(Interface):
diff --git a/diceplayer/shared/utils/dataclass_protocol.py b/diceplayer/shared/utils/dataclass_protocol.py
index 7d7c4da..967e7c1 100644
--- a/diceplayer/shared/utils/dataclass_protocol.py
+++ b/diceplayer/shared/utils/dataclass_protocol.py
@@ -1,4 +1,4 @@
-from typing import Protocol, runtime_checkable
+from typing_extensions import Protocol, runtime_checkable
 
 
 @runtime_checkable
diff --git a/diceplayer/shared/utils/misc.py b/diceplayer/shared/utils/misc.py
index af2ac13..3884b52 100644
--- a/diceplayer/shared/utils/misc.py
+++ b/diceplayer/shared/utils/misc.py
@@ -1,9 +1,10 @@
+from typing_extensions import Final
+
 import gzip
 import os
 import shutil
 import sys
 import time
-from typing import Final
 
 #######################################  constants  ######################################
 
diff --git a/poetry.lock b/poetry.lock
index 44ca879..90734f3 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -801,4 +801,4 @@ test = ["covdefaults (>=2.3)", "coverage (>=7.2.7)", "coverage-enable-subprocess
 [metadata]
 lock-version = "2.1"
 python-versions = ">=3.9"
-content-hash = "4a1819a86e32881c06191270ef503ebe87ef4ff519052fd8f0852510e31668e1"
+content-hash = "5279a27d4c4f2d07ca08ba879729efb8e7259c64907bbac87e5f574818eb66e2"
diff --git a/pyproject.toml b/pyproject.toml
index c25892c..0c1c429 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,6 +24,7 @@ setproctitle = "^1.3.2"
 pyyaml = "^6.0"
 nptyping = "^2.5.0"
 pydantic = "^2.12.5"
+typing-extensions = "^4.15.0"
 
 
 [tool.poetry.group.dev.dependencies]
diff --git a/tests/mocks/mock_proc.py b/tests/mocks/mock_proc.py
index 3c6310f..2dfa1d1 100644
--- a/tests/mocks/mock_proc.py
+++ b/tests/mocks/mock_proc.py
@@ -1,5 +1,6 @@
+from typing_extensions import List
+
 import itertools
-from typing import List
 
 
 class MockProc: