diff --git a/glances/cpu_percent.py b/glances/cpu_percent.py
index 5a498722..ee7e78eb 100644
--- a/glances/cpu_percent.py
+++ b/glances/cpu_percent.py
@@ -9,7 +9,7 @@
 """CPU percent stats shared between CPU and Quicklook plugins."""
 
 import platform
-from typing import Optional, TypedDict
+from typing import TypedDict
 
 import psutil
 
@@ -21,8 +21,8 @@ __all__ = ["cpu_percent"]
 
 class CpuInfo(TypedDict):
     cpu_name: str
-    cpu_hz: Optional[float]
-    cpu_hz_current: Optional[float]
+    cpu_hz: float | None
+    cpu_hz_current: float | None
 
 
 class PerCpuPercentInfo(TypedDict):
@@ -32,15 +32,15 @@ class PerCpuPercentInfo(TypedDict):
     user: float
     system: float
     idle: float
-    nice: Optional[float]
-    iowait: Optional[float]
-    irq: Optional[float]
-    softirq: Optional[float]
-    steal: Optional[float]
-    guest: Optional[float]
-    guest_nice: Optional[float]
-    dpc: Optional[float]
-    interrupt: Optional[float]
+    nice: float | None
+    iowait: float | None
+    irq: float | None
+    softirq: float | None
+    steal: float | None
+    guest: float | None
+    guest_nice: float | None
+    dpc: float | None
+    interrupt: float | None
 
 
 class CpuPercent:
diff --git a/glances/globals.py b/glances/globals.py
index 977c50f3..4befb953 100644
--- a/glances/globals.py
+++ b/glances/globals.py
@@ -364,7 +364,7 @@ def json_dumps(data) -> bytes:
     return b(res)
 
 
-def json_loads(data: Union[str, bytes, bytearray]) -> Union[dict, list]:
+def json_loads(data: str | bytes | bytearray) -> dict | list:
     """Load a JSON buffer into memory as a Python object"""
     return json.loads(data)
 
@@ -401,7 +401,7 @@ def dictlist_json_dumps(data, item):
     return json_dumps(dl)
 
 
-def dictlist_first_key_value(data: list[dict], key, value) -> Optional[dict]:
+def dictlist_first_key_value(data: list[dict], key, value) -> dict | None:
     """In a list of dict, return first item where key=value or none if not found."""
     try:
         ret = next(item for item in data if key in item and item[key] == value)
diff --git a/glances/outputs/glances_restful_api.py b/glances/outputs/glances_restful_api.py
index c16a15ee..03bb7e64 100644
--- a/glances/outputs/glances_restful_api.py
+++ b/glances/outputs/glances_restful_api.py
@@ -12,7 +12,7 @@ import os
 import socket
 import sys
 import webbrowser
-from typing import Annotated, Any, Union
+from typing import Annotated, Any
 from urllib.parse import urljoin
 
 from glances import __apiversion__, __version__
@@ -815,7 +815,7 @@ class GlancesRestfulApi:
         else:
             return GlancesJSONResponse(ret)
 
-    def _api_value(self, plugin: str, item: str, value: Union[str, int, float]):
+    def _api_value(self, plugin: str, item: str, value: str | int | float):
         """Glances API RESTful implementation.
 
         Return the process stats (dict) for the given item=value
diff --git a/glances/plugins/containers/__init__.py b/glances/plugins/containers/__init__.py
index 0ef4df40..332b0088 100644
--- a/glances/plugins/containers/__init__.py
+++ b/glances/plugins/containers/__init__.py
@@ -11,7 +11,7 @@
 from copy import deepcopy
 from functools import partial, reduce
 from itertools import chain
-from typing import Any, Optional
+from typing import Any
 
 from glances.globals import nativestr
 from glances.logger import logger
@@ -514,7 +514,7 @@ class ContainersPlugin(GlancesPluginModel):
 
         return ret
 
-    def msg_curse(self, args=None, max_width: Optional[int] = None) -> list[str]:
+    def msg_curse(self, args=None, max_width: int | None = None) -> list[str]:
         """Return the dict to display in the curse interface."""
         # Init the return message
         init = []
@@ -594,7 +594,6 @@ def sort_docker_stats(stats: list[dict[str, Any]]) -> tuple[str, list[dict[str,
 
     # Return the main sort key and the sorted stats
     return sort_by, stats
-    # Return the main sort key and the sorted stats
-    return sort_by, stats
-    # Return the main sort key and the sorted stats
-    return sort_by, stats
+
+
+# End of file
diff --git a/glances/plugins/containers/engines/docker.py b/glances/plugins/containers/engines/docker.py
index 95f95c87..2a867cf0 100644
--- a/glances/plugins/containers/engines/docker.py
+++ b/glances/plugins/containers/engines/docker.py
@@ -9,7 +9,7 @@
 """Docker Extension unit for Glances' Containers plugin."""
 
 import time
-from typing import Any, Optional
+from typing import Any
 
 from glances.globals import nativestr, pretty_date, replace_special_chars
 from glances.logger import logger
@@ -83,7 +83,7 @@ class DockerStatsFetcher:
         # In case no update, default to 1
         return max(1, self._streamer.last_update_time - self._last_stats_computed_time)
 
-    def _get_cpu_stats(self) -> Optional[dict[str, float]]:
+    def _get_cpu_stats(self) -> dict[str, float] | None:
         """Return the container CPU usage.
 
         Output: a dict {'total': 1.49}
@@ -117,7 +117,7 @@ class DockerStatsFetcher:
         # Return the stats
         return stats
 
-    def _get_memory_stats(self) -> Optional[dict[str, float]]:
+    def _get_memory_stats(self) -> dict[str, float] | None:
         """Return the container MEMORY.
 
         Output: a dict {'usage': ..., 'limit': ..., 'inactive_file': ...}
@@ -140,7 +140,7 @@ class DockerStatsFetcher:
         # Return the stats
         return stats
 
-    def _get_network_stats(self) -> Optional[dict[str, float]]:
+    def _get_network_stats(self) -> dict[str, float] | None:
         """Return the container network usage using the Docker API (v1.0 or higher).
 
         Output: a dict {'time_since_update': 3000, 'rx': 10, 'tx': 65}.
@@ -169,7 +169,7 @@ class DockerStatsFetcher:
         # Return the stats
         return stats
 
-    def _get_io_stats(self) -> Optional[dict[str, float]]:
+    def _get_io_stats(self) -> dict[str, float] | None:
         """Return the container IO usage using the Docker API (v1.0 or higher).
 
         Output: a dict {'time_since_update': 3000, 'ior': 10, 'iow': 65}.
diff --git a/glances/plugins/containers/engines/podman.py b/glances/plugins/containers/engines/podman.py
index c92783e1..d1abecfe 100644
--- a/glances/plugins/containers/engines/podman.py
+++ b/glances/plugins/containers/engines/podman.py
@@ -9,7 +9,7 @@
 
 import time
 from datetime import datetime
-from typing import Any, Optional
+from typing import Any
 
 from glances.globals import nativestr, pretty_date, replace_special_chars, string_value_to_float
 from glances.logger import logger
@@ -164,7 +164,7 @@ class PodmanPodStatsFetcher:
 
         return result_stats
 
-    def _get_cpu_stats(self, stats: dict) -> Optional[dict]:
+    def _get_cpu_stats(self, stats: dict) -> dict | None:
         """Return the container CPU usage.
 
         Output: a dict {'total': 1.49}
@@ -176,7 +176,7 @@ class PodmanPodStatsFetcher:
         cpu_usage = string_value_to_float(stats["CPU"].rstrip("%"))
         return {"total": cpu_usage}
 
-    def _get_memory_stats(self, stats) -> Optional[dict]:
+    def _get_memory_stats(self, stats) -> dict | None:
         """Return the container MEMORY.
 
         Output: a dict {'usage': ..., 'limit': ...}
@@ -197,7 +197,7 @@ class PodmanPodStatsFetcher:
 
         return {'usage': usage, 'limit': limit, 'inactive_file': 0}
 
-    def _get_network_stats(self, stats) -> Optional[dict]:
+    def _get_network_stats(self, stats) -> dict | None:
         """Return the container network usage using the Docker API (v1.0 or higher).
 
         Output: a dict {'time_since_update': 3000, 'rx': 10, 'tx': 65}.
@@ -223,7 +223,7 @@ class PodmanPodStatsFetcher:
         # Hardcode `time_since_update` to 1 as podman docs don't specify the rate calculation procedure
         return {"rx": rx, "tx": tx, "time_since_update": 1}
 
-    def _get_io_stats(self, stats) -> Optional[dict]:
+    def _get_io_stats(self, stats) -> dict | None:
         """Return the container IO usage using the Docker API (v1.0 or higher).
 
         Output: a dict {'time_since_update': 3000, 'ior': 10, 'iow': 65}.
diff --git a/glances/plugins/gpu/cards/amd.py b/glances/plugins/gpu/cards/amd.py
index 345cd038..638c29e1 100644
--- a/glances/plugins/gpu/cards/amd.py
+++ b/glances/plugins/gpu/cards/amd.py
@@ -43,7 +43,6 @@ import functools
 import glob
 import os
 import re
-from typing import Optional
 
 DRM_ROOT_FOLDER: str = '/sys/class/drm'
 DEVICE_FOLDER_PATTERN: str = 'card[0-9]/device'
@@ -105,7 +104,7 @@ def get_device_list(drm_root_folder: str) -> list[str]:
     return ret
 
 
-def read_file(*path_segments: str) -> Optional[str]:
+def read_file(*path_segments: str) -> str | None:
     """Return content of file."""
     path = os.path.join(*path_segments)
     if os.path.isfile(path):
@@ -139,7 +138,7 @@ def get_device_name(device_folder: str) -> str:
     return 'AMD GPU'
 
 
-def get_mem(device_folder: str) -> Optional[int]:
+def get_mem(device_folder: str) -> int | None:
     """Return the memory consumption in %."""
     mem_info_total = read_file(device_folder, GPU_MEM_TOTAL)
     mem_info_used = read_file(device_folder, GPU_MEM_USED)
@@ -160,14 +159,14 @@ def get_mem(device_folder: str) -> Optional[int]:
     return None
 
 
-def get_proc(device_folder: str) -> Optional[int]:
+def get_proc(device_folder: str) -> int | None:
     """Return the processor consumption in %."""
     if gpu_busy_percent := read_file(device_folder, GPU_PROC_PERCENT):
         return int(gpu_busy_percent)
     return None
 
 
-def get_temperature(device_folder: str) -> Optional[int]:
+def get_temperature(device_folder: str) -> int | None:
     """Return the processor temperature in °C (mean of all HWMON)"""
     temp_input = []
     for temp_file in glob.glob(HWMON_TEMPERATURE_PATTERN, root_dir=device_folder):
@@ -180,6 +179,6 @@ def get_temperature(device_folder: str) -> Optional[int]:
     return None
 
 
-def get_fan_speed(device_folder: str) -> Optional[int]:
+def get_fan_speed(device_folder: str) -> int | None:
     """Return the fan speed in %."""
     return None
diff --git a/glances/plugins/vms/__init__.py b/glances/plugins/vms/__init__.py
index 87ca1c20..50aae23e 100644
--- a/glances/plugins/vms/__init__.py
+++ b/glances/plugins/vms/__init__.py
@@ -9,7 +9,7 @@
 """Vms plugin."""
 
 from copy import deepcopy
-from typing import Any, Optional
+from typing import Any
 
 from glances.logger import logger
 from glances.plugins.plugin.model import GlancesPluginModel
@@ -201,7 +201,7 @@ class VmsPlugin(GlancesPluginModel):
 
         return True
 
-    def msg_curse(self, args=None, max_width: Optional[int] = None) -> list[str]:
+    def msg_curse(self, args=None, max_width: int | None = None) -> list[str]:
         """Return the dict to display in the curse interface."""
         # Init the return message
         ret = []
@@ -345,3 +345,6 @@ def sort_vm_stats(stats: list[dict[str, Any]]) -> tuple[str, list[dict[str, Any]
 
     # Return the main sort key and the sorted stats
     return sort_by, stats
+
+
+# End of file
diff --git a/pyproject.toml b/pyproject.toml
index eb05ab16..b0bcdbb3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -134,7 +134,7 @@ include = ["glances*"]
 
 [tool.ruff]
 line-length = 120
-target-version = "py39"
+target-version = "py310"
 
 [tool.ruff.format]
 quote-style = "preserve"