diff --git a/findmy/reports/account.py b/findmy/reports/account.py
index ce731e7..d9a8a8a 100644
--- a/findmy/reports/account.py
+++ b/findmy/reports/account.py
@@ -9,12 +9,13 @@ import logging
 import plistlib
 import uuid
 from abc import ABC, abstractmethod
+from collections.abc import Callable
 from datetime import datetime, timedelta, timezone
 from functools import wraps
 from typing import (
     TYPE_CHECKING,
     Any,
-    Callable,
+    Concatenate,
     Literal,
     TypedDict,
     TypeVar,
@@ -24,7 +25,7 @@ from typing import (
 
 import bs4
 import srp._pysrp as srp
-from typing_extensions import Concatenate, ParamSpec, override
+from typing_extensions import ParamSpec, override
 
 from findmy import util
 from findmy.errors import (
diff --git a/findmy/reports/anisette.py b/findmy/reports/anisette.py
index 2f22dc6..1c5e3e5 100644
--- a/findmy/reports/anisette.py
+++ b/findmy/reports/anisette.py
@@ -12,7 +12,7 @@ from abc import ABC, abstractmethod
 from datetime import datetime, timezone
 from io import BytesIO
 from pathlib import Path
-from typing import BinaryIO, Literal, TypedDict, Union
+from typing import BinaryIO, Literal, TypedDict
 
 from anisette import Anisette, AnisetteHeaders
 from typing_extensions import override
@@ -36,7 +36,7 @@ class LocalAnisetteMapping(TypedDict):
     prov_data: str | None
 
 
-AnisetteMapping = Union[RemoteAnisetteMapping, LocalAnisetteMapping]
+AnisetteMapping = RemoteAnisetteMapping | LocalAnisetteMapping
 
 
 def get_provider_from_mapping(
diff --git a/findmy/reports/reports.py b/findmy/reports/reports.py
index 3c9c162..7866f62 100644
--- a/findmy/reports/reports.py
+++ b/findmy/reports/reports.py
@@ -9,7 +9,7 @@ import logging
 import struct
 from collections import defaultdict
 from datetime import datetime, timedelta, timezone
-from typing import TYPE_CHECKING, Literal, TypedDict, Union, overload
+from typing import TYPE_CHECKING, Literal, TypedDict, overload
 
 from cryptography.hazmat.backends import default_backend
 from cryptography.hazmat.primitives.asymmetric import ec
@@ -49,7 +49,7 @@ class LocationReportDecryptedMapping(TypedDict):
     key: KeyPairMapping
 
 
-LocationReportMapping = Union[LocationReportEncryptedMapping, LocationReportDecryptedMapping]
+LocationReportMapping = LocationReportEncryptedMapping | LocationReportDecryptedMapping
 
 
 class LocationReport(HasHashedPublicKey, util.abc.Serializable[LocationReportMapping]):
diff --git a/findmy/util/session.py b/findmy/util/session.py
index 676e98a..56ab928 100644
--- a/findmy/util/session.py
+++ b/findmy/util/session.py
@@ -3,7 +3,7 @@
 from __future__ import annotations
 
 import random
-from typing import TYPE_CHECKING, Any, Generic, TypeVar, Union
+from typing import TYPE_CHECKING, Any, Generic, TypeVar
 
 from typing_extensions import Self
 
@@ -14,7 +14,7 @@ if TYPE_CHECKING:
     from types import TracebackType
 
 _S = TypeVar("_S", bound=Serializable)
-_SC = TypeVar("_SC", bound=Union[Serializable, Closable])
+_SC = TypeVar("_SC", bound=Serializable | Closable)
 
 
 class _BaseSessionManager(Generic[_SC]):
@@ -67,7 +67,7 @@ class _BaseSessionManager(Generic[_SC]):
         self.save()
 
 
-class MixedSessionManager(_BaseSessionManager[Union[Serializable, Closable]]):
+class MixedSessionManager(_BaseSessionManager[Serializable | Closable]):
     """Allows any Serializable or Closable object."""
 
     def new(
diff --git a/findmy/util/types.py b/findmy/util/types.py
index 370ad61..aabf2d1 100644
--- a/findmy/util/types.py
+++ b/findmy/util/types.py
@@ -1,10 +1,8 @@
 """Utility types."""
 
 from collections.abc import Coroutine
-from typing import TypeVar, Union
+from typing import TypeAlias, TypeVar
 
 _T = TypeVar("_T")
 
-# Cannot use `|` operator (PEP 604) in python 3.9,
-# even with __future__ import since it is evaluated directly
-MaybeCoro = Union[_T, Coroutine[None, None, _T]]
+MaybeCoro: TypeAlias = _T | Coroutine[None, None, _T]