diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index b52cced901b..aaefd47a553 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -42,7 +42,7 @@ env:
   MYPY_CACHE_VERSION: 1
   HA_SHORT_VERSION: "2025.11"
   DEFAULT_PYTHON: "3.13"
-  ALL_PYTHON_VERSIONS: "['3.13']"
+  ALL_PYTHON_VERSIONS: "['3.13', '3.14']"
   # 10.3 is the oldest supported version
   # - 10.3.32 is the version currently shipped with Synology (as of 17 Feb 2022)
   # 10.6 is the current long-term-support
diff --git a/homeassistant/components/apple_tv/__init__.py b/homeassistant/components/apple_tv/__init__.py
index b911b3cec99..7c0004d44c5 100644
--- a/homeassistant/components/apple_tv/__init__.py
+++ b/homeassistant/components/apple_tv/__init__.py
@@ -5,14 +5,9 @@ from __future__ import annotations
 import asyncio
 import logging
 from random import randrange
+import sys
 from typing import Any, cast
 
-from pyatv import connect, exceptions, scan
-from pyatv.conf import AppleTV
-from pyatv.const import DeviceModel, Protocol
-from pyatv.convert import model_str
-from pyatv.interface import AppleTV as AppleTVInterface, DeviceListener
-
 from homeassistant.components import zeroconf
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
@@ -29,7 +24,11 @@ from homeassistant.const import (
     Platform,
 )
 from homeassistant.core import Event, HomeAssistant, callback
-from homeassistant.exceptions import ConfigEntryAuthFailed, ConfigEntryNotReady
+from homeassistant.exceptions import (
+    ConfigEntryAuthFailed,
+    ConfigEntryNotReady,
+    HomeAssistantError,
+)
 from homeassistant.helpers import device_registry as dr
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers.dispatcher import async_dispatcher_send
@@ -43,6 +42,18 @@ from .const import (
     SIGNAL_DISCONNECTED,
 )
 
+if sys.version_info < (3, 14):
+    from pyatv import connect, exceptions, scan
+    from pyatv.conf import AppleTV
+    from pyatv.const import DeviceModel, Protocol
+    from pyatv.convert import model_str
+    from pyatv.interface import AppleTV as AppleTVInterface, DeviceListener
+else:
+
+    class DeviceListener:
+        """Dummy class."""
+
+
 _LOGGER = logging.getLogger(__name__)
 
 DEFAULT_NAME_TV = "Apple TV"
@@ -53,31 +64,41 @@ BACKOFF_TIME_UPPER_LIMIT = 300  # Five minutes
 
 PLATFORMS = [Platform.MEDIA_PLAYER, Platform.REMOTE]
 
-AUTH_EXCEPTIONS = (
-    exceptions.AuthenticationError,
-    exceptions.InvalidCredentialsError,
-    exceptions.NoCredentialsError,
-)
-CONNECTION_TIMEOUT_EXCEPTIONS = (
-    OSError,
-    asyncio.CancelledError,
-    TimeoutError,
-    exceptions.ConnectionLostError,
-    exceptions.ConnectionFailedError,
-)
-DEVICE_EXCEPTIONS = (
-    exceptions.ProtocolError,
-    exceptions.NoServiceError,
-    exceptions.PairingError,
-    exceptions.BackOffError,
-    exceptions.DeviceIdMissingError,
-)
+if sys.version_info < (3, 14):
+    AUTH_EXCEPTIONS = (
+        exceptions.AuthenticationError,
+        exceptions.InvalidCredentialsError,
+        exceptions.NoCredentialsError,
+    )
+    CONNECTION_TIMEOUT_EXCEPTIONS = (
+        OSError,
+        asyncio.CancelledError,
+        TimeoutError,
+        exceptions.ConnectionLostError,
+        exceptions.ConnectionFailedError,
+    )
+    DEVICE_EXCEPTIONS = (
+        exceptions.ProtocolError,
+        exceptions.NoServiceError,
+        exceptions.PairingError,
+        exceptions.BackOffError,
+        exceptions.DeviceIdMissingError,
+    )
+else:
+    AUTH_EXCEPTIONS = ()
+    CONNECTION_TIMEOUT_EXCEPTIONS = ()
+    DEVICE_EXCEPTIONS = ()
+
 
 type AppleTvConfigEntry = ConfigEntry[AppleTVManager]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: AppleTvConfigEntry) -> bool:
     """Set up a config entry for Apple TV."""
+    if sys.version_info >= (3, 14):
+        raise HomeAssistantError(
+            "Apple TV is not supported on Python 3.14. Please use Python 3.13."
+        )
     manager = AppleTVManager(hass, entry)
 
     if manager.is_on:
diff --git a/homeassistant/components/apple_tv/manifest.json b/homeassistant/components/apple_tv/manifest.json
index fe500d2bfb0..ac618221526 100644
--- a/homeassistant/components/apple_tv/manifest.json
+++ b/homeassistant/components/apple_tv/manifest.json
@@ -7,7 +7,7 @@
   "documentation": "https://www.home-assistant.io/integrations/apple_tv",
   "iot_class": "local_push",
   "loggers": ["pyatv", "srptools"],
-  "requirements": ["pyatv==0.16.1"],
+  "requirements": ["pyatv==0.16.1;python_version<'3.14'"],
   "zeroconf": [
     "_mediaremotetv._tcp.local.",
     "_companion-link._tcp.local.",
diff --git a/homeassistant/components/harmony/__init__.py b/homeassistant/components/harmony/__init__.py
index e4b6f1c7c2c..17b6cf08910 100644
--- a/homeassistant/components/harmony/__init__.py
+++ b/homeassistant/components/harmony/__init__.py
@@ -1,15 +1,20 @@
 """The Logitech Harmony Hub integration."""
 
+from __future__ import annotations
+
 import logging
+import sys
 
 from homeassistant.components.remote import ATTR_ACTIVITY, ATTR_DELAY_SECS
 from homeassistant.const import CONF_HOST, CONF_NAME, EVENT_HOMEASSISTANT_STOP
 from homeassistant.core import Event, HomeAssistant, callback
+from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import entity_registry as er
 from homeassistant.helpers.dispatcher import async_dispatcher_send
 
-from .const import HARMONY_OPTIONS_UPDATE, PLATFORMS
-from .data import HarmonyConfigEntry, HarmonyData
+if sys.version_info < (3, 14):
+    from .const import HARMONY_OPTIONS_UPDATE, PLATFORMS
+    from .data import HarmonyConfigEntry, HarmonyData
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -20,6 +25,10 @@ async def async_setup_entry(hass: HomeAssistant, entry: HarmonyConfigEntry) -> b
     # when setting up a config entry, we fallback to adding
     # the options to the config entry and pull them out here if
     # they are missing from the options
+    if sys.version_info >= (3, 14):
+        raise HomeAssistantError(
+            "Logitech Harmony Hub is not supported on Python 3.14. Please use Python 3.13."
+        )
     _async_import_options_from_data_if_missing(hass, entry)
 
     address = entry.data[CONF_HOST]
diff --git a/homeassistant/components/harmony/manifest.json b/homeassistant/components/harmony/manifest.json
index f74bff314a4..795c9c5ed88 100644
--- a/homeassistant/components/harmony/manifest.json
+++ b/homeassistant/components/harmony/manifest.json
@@ -7,7 +7,7 @@
   "documentation": "https://www.home-assistant.io/integrations/harmony",
   "iot_class": "local_push",
   "loggers": ["aioharmony", "slixmpp"],
-  "requirements": ["aioharmony==0.5.3"],
+  "requirements": ["aioharmony==0.5.3;python_version<'3.14'"],
   "ssdp": [
     {
       "manufacturer": "Logitech",
diff --git a/homeassistant/components/profiler/__init__.py b/homeassistant/components/profiler/__init__.py
index 66b35eaff21..6a8ce39b32b 100644
--- a/homeassistant/components/profiler/__init__.py
+++ b/homeassistant/components/profiler/__init__.py
@@ -453,6 +453,10 @@ async def _async_generate_memory_profile(hass: HomeAssistant, call: ServiceCall)
     # Imports deferred to avoid loading modules
     # in memory since usually only one part of this
     # integration is used at a time
+    if sys.version_info >= (3, 14):
+        raise HomeAssistantError(
+            "Memory profiling is not supported on Python 3.14. Please use Python 3.13."
+        )
     from guppy import hpy  # noqa: PLC0415
 
     start_time = int(time.time() * 1000000)
diff --git a/homeassistant/components/profiler/manifest.json b/homeassistant/components/profiler/manifest.json
index 814b00a16d4..68eb7179a29 100644
--- a/homeassistant/components/profiler/manifest.json
+++ b/homeassistant/components/profiler/manifest.json
@@ -7,7 +7,7 @@
   "quality_scale": "internal",
   "requirements": [
     "pyprof2calltree==1.4.5",
-    "guppy3==3.1.5",
+    "guppy3==3.1.5;python_version<'3.14'",
     "objgraph==3.5.0"
   ],
   "single_config_entry": true
diff --git a/homeassistant/components/python_script/manifest.json b/homeassistant/components/python_script/manifest.json
index c8cb1da40c9..d25515fb454 100644
--- a/homeassistant/components/python_script/manifest.json
+++ b/homeassistant/components/python_script/manifest.json
@@ -5,5 +5,8 @@
   "documentation": "https://www.home-assistant.io/integrations/python_script",
   "loggers": ["RestrictedPython"],
   "quality_scale": "internal",
-  "requirements": ["RestrictedPython==8.0"]
+  "requirements": [
+    "RestrictedPython==8.0;python_version<'3.14'",
+    "RestrictedPython==8.1a1.dev0;python_version>='3.14'"
+  ]
 }
diff --git a/homeassistant/components/recorder/executor.py b/homeassistant/components/recorder/executor.py
index 6b8192d1e14..082be5787c8 100644
--- a/homeassistant/components/recorder/executor.py
+++ b/homeassistant/components/recorder/executor.py
@@ -4,6 +4,7 @@ from __future__ import annotations
 
 from collections.abc import Callable
 from concurrent.futures.thread import _threads_queues, _worker
+import sys
 import threading
 from typing import Any
 import weakref
@@ -53,6 +54,18 @@ class DBInterruptibleThreadPoolExecutor(InterruptibleThreadPoolExecutor):
         ) -> None:
             q.put(None)
 
+        if sys.version_info >= (3, 14):
+            additional_args = (
+                self._create_worker_context(),
+                self._work_queue,
+            )
+        else:
+            additional_args = (
+                self._work_queue,
+                self._initializer,
+                self._initargs,
+            )
+
         num_threads = len(self._threads)
         if num_threads < self._max_workers:
             thread_name = f"{self._thread_name_prefix or self}_{num_threads}"
@@ -63,9 +76,7 @@ class DBInterruptibleThreadPoolExecutor(InterruptibleThreadPoolExecutor):
                     self._shutdown_hook,
                     self.recorder_and_worker_thread_ids,
                     weakref.ref(self, weakref_cb),
-                    self._work_queue,
-                    self._initializer,
-                    self._initargs,
+                    *(additional_args),
                 ),
             )
             executor_thread.start()
diff --git a/homeassistant/components/xmpp/manifest.json b/homeassistant/components/xmpp/manifest.json
index d128e3e5111..8c3a56da2bf 100644
--- a/homeassistant/components/xmpp/manifest.json
+++ b/homeassistant/components/xmpp/manifest.json
@@ -6,5 +6,8 @@
   "iot_class": "cloud_push",
   "loggers": ["pyasn1", "slixmpp"],
   "quality_scale": "legacy",
-  "requirements": ["slixmpp==1.10.0", "emoji==2.8.0"]
+  "requirements": [
+    "slixmpp==1.10.0;python_version<'3.14'",
+    "emoji==2.8.0;python_version<'3.14'"
+  ]
 }
diff --git a/homeassistant/components/xmpp/notify.py b/homeassistant/components/xmpp/notify.py
index ee57abd769d..ca622ec670a 100644
--- a/homeassistant/components/xmpp/notify.py
+++ b/homeassistant/components/xmpp/notify.py
@@ -9,16 +9,9 @@ import mimetypes
 import pathlib
 import random
 import string
+import sys
 
 import requests
-import slixmpp
-from slixmpp.exceptions import IqError, IqTimeout, XMPPError
-from slixmpp.plugins.xep_0363.http_upload import (
-    FileTooBig,
-    FileUploadError,
-    UploadServiceNotFound,
-)
-from slixmpp.xmlstream.xmlstream import NotConnectedError
 import voluptuous as vol
 
 from homeassistant.components.notify import (
@@ -35,9 +28,20 @@ from homeassistant.const import (
     CONF_SENDER,
 )
 from homeassistant.core import HomeAssistant
+from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import config_validation as cv, template as template_helper
 from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 
+if sys.version_info < (3, 14):
+    import slixmpp
+    from slixmpp.exceptions import IqError, IqTimeout, XMPPError
+    from slixmpp.plugins.xep_0363.http_upload import (
+        FileTooBig,
+        FileUploadError,
+        UploadServiceNotFound,
+    )
+    from slixmpp.xmlstream.xmlstream import NotConnectedError
+
 _LOGGER = logging.getLogger(__name__)
 
 ATTR_DATA = "data"
@@ -74,6 +78,10 @@ async def async_get_service(
     discovery_info: DiscoveryInfoType | None = None,
 ) -> XmppNotificationService:
     """Get the Jabber (XMPP) notification service."""
+    if sys.version_info >= (3, 14):
+        raise HomeAssistantError(
+            "Jabber (XMPP) is not supported on Python 3.14. Please use Python 3.13."
+        )
     return XmppNotificationService(
         config.get(CONF_SENDER),
         config.get(CONF_RESOURCE),
diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index 36e60447720..9af0efd4ab9 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -132,8 +132,8 @@ backoff>=2.0
 # ensure pydantic version does not float since it might have breaking changes
 pydantic==2.12.2
 
-# Required for Python 3.12.4 compatibility (#119223).
-mashumaro>=3.13.1
+# Required for Python 3.14.0 compatibility (#119223).
+mashumaro>=3.17.0
 
 # Breaks asyncio
 # https://github.com/pubnub/python/issues/130
diff --git a/homeassistant/util/frozen_dataclass_compat.py b/homeassistant/util/frozen_dataclass_compat.py
index 518515d4f85..a727edf88d5 100644
--- a/homeassistant/util/frozen_dataclass_compat.py
+++ b/homeassistant/util/frozen_dataclass_compat.py
@@ -10,6 +10,11 @@ import dataclasses
 import sys
 from typing import TYPE_CHECKING, Any, cast, dataclass_transform
 
+if sys.version_info >= (3, 14):
+    from annotationlib import Format, get_annotations
+else:
+    from typing_extensions import Format, get_annotations
+
 if TYPE_CHECKING:
     from _typeshed import DataclassInstance
 
@@ -19,7 +24,7 @@ def _class_fields(cls: type, kw_only: bool) -> list[tuple[str, Any, Any]]:
 
     Extracted from dataclasses._process_class.
     """
-    cls_annotations = cls.__dict__.get("__annotations__", {})
+    cls_annotations = get_annotations(cls, format=Format.FORWARDREF)
 
     cls_fields: list[dataclasses.Field[Any]] = []
 
@@ -96,8 +101,16 @@ class FrozenOrThawed(type):
             for parent in cls.__mro__[::-1]:
                 if parent is object:
                     continue
-                annotations |= parent.__annotations__
-            cls.__annotations__ = annotations
+                annotations |= get_annotations(parent, format=Format.FORWARDREF)
+
+            if "__annotations__" in cls.__dict__ or sys.version_info < (3, 14):
+                cls.__annotations__ = annotations
+            else:
+
+                def wrapped_annotate(format: Format) -> dict:
+                    return annotations
+
+                cls.__annotate__ = wrapped_annotate
             return
 
         # First try without setting the kw_only flag, and if that fails, try setting it
diff --git a/pyproject.toml b/pyproject.toml
index 99c4f3a7a53..d1d78d93955 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,6 +19,7 @@ classifiers = [
   "Intended Audience :: Developers",
   "Operating System :: OS Independent",
   "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: 3.14",
   "Topic :: Home Automation",
 ]
 requires-python = ">=3.13.2"
@@ -569,6 +570,11 @@ filterwarnings = [
   # https://pypi.org/project/opuslib/ - v3.0.1 - 2018-01-16
   # https://pypi.org/project/pyiss/ - v1.0.1 - 2016-12-19
   "ignore:\"is.*\" with '.*' literal:SyntaxWarning:importlib._bootstrap",
+  # - SyntaxWarning - return in finally
+  # https://github.com/nextcord/nextcord/pull/1268 - v3.1.1 - 2025-08-16
+  # https://github.com/Python-roborock/python-roborock/ - >=2.50.4
+  # https://pypi.org/project/sleekxmppfs/ - v1.4.1 - 2022-08-18
+  "ignore:'return' in a 'finally' block:SyntaxWarning:importlib._bootstrap",
 
   # -- New in Python 3.13
   # https://github.com/youknowone/python-deadlib - Backports for aifc, telnetlib
@@ -577,6 +583,28 @@ filterwarnings = [
   "ignore:telnetlib was removed in Python 3.13.*'standard-telnetlib':DeprecationWarning:ndms2_client.connection",
   "ignore:telnetlib was removed in Python 3.13.*'standard-telnetlib':DeprecationWarning:pyws66i",
 
+  # -- New in Python 3.14
+  # https://github.com/kumaraditya303/aioshutil - v1.5 - 2024-07-20
+  "ignore:'shutil.ExecError' is deprecated and slated for removal in Python 3.16:DeprecationWarning:aioshutil",
+  # https://github.com/litl/backoff/pull/220 - v2.2.1 - 2022-10-05 (archived)
+  "ignore:'asyncio.iscoroutinefunction' is deprecated and slated for removal in Python 3.16:DeprecationWarning:(backoff._decorator|backoff._async)",
+  # https://github.com/albertogeniola/elmax-api - v0.0.6.3 - 2024-11-30
+  "ignore:'asyncio.iscoroutinefunction' is deprecated and slated for removal in Python 3.16:DeprecationWarning:elmax_api.http",
+  # https://github.com/py-mine/mcstatus - v12.0.5 - 2025-08-13
+  "ignore:'asyncio.iscoroutinefunction' is deprecated and slated for removal in Python 3.16:DeprecationWarning:mcstatus.utils",
+  # https://github.com/nextcord/nextcord/pull/1269 - v3.1.1 - 2025-08-16
+  "ignore:'asyncio.iscoroutinefunction' is deprecated and slated for removal in Python 3.16:DeprecationWarning:nextcord.member",
+  # https://github.com/andrewsayre/pyheos/pull/124 - >1.0.5
+  "ignore:'asyncio.iscoroutinefunction' is deprecated and slated for removal in Python 3.16:DeprecationWarning:pyheos.dispatch",
+  # https://github.com/SteveEasley/pykaleidescape/pull/7 - v2022.2.6 - 2022-03-07
+  "ignore:'asyncio.iscoroutinefunction' is deprecated and slated for removal in Python 3.16:DeprecationWarning:kaleidescape.dispatcher",
+  # https://github.com/svinota/pyroute2
+  "ignore:Due to '_pack_', the '.*' Structure will use memory layout compatible with MSVC:DeprecationWarning:pyroute2.ethtool.ioctl",
+  # https://github.com/googleapis/python-genai
+  "ignore:'_UnionGenericAlias' is deprecated and slated for removal in Python 3.17:DeprecationWarning:google.genai.types",
+  # https://github.com/pyusb/pyusb
+  "ignore:Due to '_pack_', the '.*' Structure will use memory layout compatible with MSVC:DeprecationWarning:usb.backend.libusb0",
+
   # -- Websockets 14.1
   # https://websockets.readthedocs.io/en/stable/howto/upgrade.html
   "ignore:websockets.legacy is deprecated:DeprecationWarning:websockets.legacy",
diff --git a/requirements_all.txt b/requirements_all.txt
index 399383d681a..9102598ccc8 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -109,7 +109,10 @@ PyXiaomiGateway==0.14.3
 RachioPy==1.1.0
 
 # homeassistant.components.python_script
-RestrictedPython==8.0
+RestrictedPython==8.0;python_version<'3.14'
+
+# homeassistant.components.python_script
+RestrictedPython==8.1a1.dev0;python_version>='3.14'
 
 # homeassistant.components.remember_the_milk
 RtmAPI==0.7.2
@@ -268,7 +271,7 @@ aiogithubapi==24.6.0
 aioguardian==2022.07.0
 
 # homeassistant.components.harmony
-aioharmony==0.5.3
+aioharmony==0.5.3;python_version<'3.14'
 
 # homeassistant.components.hassio
 aiohasupervisor==0.3.3
@@ -883,7 +886,7 @@ elmax-api==0.0.6.4rc0
 elvia==0.1.0
 
 # homeassistant.components.xmpp
-emoji==2.8.0
+emoji==2.8.0;python_version<'3.14'
 
 # homeassistant.components.emulated_roku
 emulated-roku==0.3.0
@@ -1127,7 +1130,7 @@ gspread==5.5.0
 gstreamer-player==1.1.2
 
 # homeassistant.components.profiler
-guppy3==3.1.5
+guppy3==3.1.5;python_version<'3.14'
 
 # homeassistant.components.iaqualink
 h2==4.3.0
@@ -1885,7 +1888,7 @@ pyatag==0.3.5.3
 pyatmo==9.2.3
 
 # homeassistant.components.apple_tv
-pyatv==0.16.1
+pyatv==0.16.1;python_version<'3.14'
 
 # homeassistant.components.aussie_broadband
 pyaussiebb==0.1.5
@@ -2846,7 +2849,7 @@ skyboxremote==0.0.6
 slack_sdk==3.33.4
 
 # homeassistant.components.xmpp
-slixmpp==1.10.0
+slixmpp==1.10.0;python_version<'3.14'
 
 # homeassistant.components.smart_meter_texas
 smart-meter-texas==0.5.5
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index b4600989f1a..9303f8bf687 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -103,7 +103,10 @@ PyXiaomiGateway==0.14.3
 RachioPy==1.1.0
 
 # homeassistant.components.python_script
-RestrictedPython==8.0
+RestrictedPython==8.0;python_version<'3.14'
+
+# homeassistant.components.python_script
+RestrictedPython==8.1a1.dev0;python_version>='3.14'
 
 # homeassistant.components.remember_the_milk
 RtmAPI==0.7.2
@@ -253,7 +256,7 @@ aiogithubapi==24.6.0
 aioguardian==2022.07.0
 
 # homeassistant.components.harmony
-aioharmony==0.5.3
+aioharmony==0.5.3;python_version<'3.14'
 
 # homeassistant.components.hassio
 aiohasupervisor==0.3.3
@@ -988,7 +991,7 @@ gspread==5.5.0
 gstreamer-player==1.1.2
 
 # homeassistant.components.profiler
-guppy3==3.1.5
+guppy3==3.1.5;python_version<'3.14'
 
 # homeassistant.components.iaqualink
 h2==4.3.0
@@ -1593,7 +1596,7 @@ pyatag==0.3.5.3
 pyatmo==9.2.3
 
 # homeassistant.components.apple_tv
-pyatv==0.16.1
+pyatv==0.16.1;python_version<'3.14'
 
 # homeassistant.components.aussie_broadband
 pyaussiebb==0.1.5
diff --git a/script/gen_requirements_all.py b/script/gen_requirements_all.py
index 749cbe99783..4c494185117 100755
--- a/script/gen_requirements_all.py
+++ b/script/gen_requirements_all.py
@@ -157,8 +157,8 @@ backoff>=2.0
 # ensure pydantic version does not float since it might have breaking changes
 pydantic==2.12.2
 
-# Required for Python 3.12.4 compatibility (#119223).
-mashumaro>=3.13.1
+# Required for Python 3.14.0 compatibility (#119223).
+mashumaro>=3.17.0
 
 # Breaks asyncio
 # https://github.com/pubnub/python/issues/130
diff --git a/tests/components/apple_tv/__init__.py b/tests/components/apple_tv/__init__.py
index 514d77bde4d..e06e5deaa15 100644
--- a/tests/components/apple_tv/__init__.py
+++ b/tests/components/apple_tv/__init__.py
@@ -1,6 +1,9 @@
 """Tests for Apple TV."""
 
+import sys
+
 import pytest
 
-# Make asserts in the common module display differences
-pytest.register_assert_rewrite("tests.components.apple_tv.common")
+if sys.version_info < (3, 14):
+    # Make asserts in the common module display differences
+    pytest.register_assert_rewrite("tests.components.apple_tv.common")
diff --git a/tests/components/apple_tv/conftest.py b/tests/components/apple_tv/conftest.py
index 78982a8d51c..22311f91b77 100644
--- a/tests/components/apple_tv/conftest.py
+++ b/tests/components/apple_tv/conftest.py
@@ -1,14 +1,20 @@
 """Fixtures for component."""
 
 from collections.abc import Generator
+import sys
 from unittest.mock import AsyncMock, MagicMock, patch
 
-from pyatv import conf
-from pyatv.const import PairingRequirement, Protocol
-from pyatv.support import http
 import pytest
 
-from .common import MockPairingHandler, airplay_service, create_conf, mrp_service
+if sys.version_info < (3, 14):
+    from pyatv import conf
+    from pyatv.const import PairingRequirement, Protocol
+    from pyatv.support import http
+
+    from .common import MockPairingHandler, airplay_service, create_conf, mrp_service
+
+if sys.version_info >= (3, 14):
+    collect_ignore_glob = ["test_*.py"]
 
 
 @pytest.fixture(autouse=True, name="mock_scan")
diff --git a/tests/components/harmony/conftest.py b/tests/components/harmony/conftest.py
index 759770e9746..701a6410e73 100644
--- a/tests/components/harmony/conftest.py
+++ b/tests/components/harmony/conftest.py
@@ -1,9 +1,11 @@
 """Fixtures for harmony tests."""
 
+from __future__ import annotations
+
 from collections.abc import Generator
+import sys
 from unittest.mock import AsyncMock, MagicMock, PropertyMock, patch
 
-from aioharmony.const import ClientCallbackType
 import pytest
 
 from homeassistant.components.harmony.const import ACTIVITY_POWER_OFF, DOMAIN
@@ -18,6 +20,13 @@ from .const import (
 
 from tests.common import MockConfigEntry
 
+if sys.version_info < (3, 14):
+    from aioharmony.const import ClientCallbackType
+
+if sys.version_info >= (3, 14):
+    collect_ignore_glob = ["test_*.py"]
+
+
 ACTIVITIES_TO_IDS = {
     ACTIVITY_POWER_OFF: -1,
     "Watch TV": WATCH_TV_ACTIVITY_ID,
diff --git a/tests/components/profiler/test_init.py b/tests/components/profiler/test_init.py
index 941d639a419..de90f849831 100644
--- a/tests/components/profiler/test_init.py
+++ b/tests/components/profiler/test_init.py
@@ -6,6 +6,7 @@ import logging
 import os
 from pathlib import Path
 import socket
+import sys
 from unittest.mock import patch
 
 from freezegun.api import FrozenDateTimeFactory
@@ -72,6 +73,9 @@ async def test_basic_usage(hass: HomeAssistant, tmp_path: Path) -> None:
     await hass.async_block_till_done()
 
 
+@pytest.mark.skipif(
+    sys.version_info >= (3, 14), reason="not yet available on Python 3.14"
+)
 async def test_memory_usage(hass: HomeAssistant, tmp_path: Path) -> None:
     """Test we can setup and the service is registered."""
     test_dir = tmp_path / "profiles"
@@ -103,6 +107,24 @@ async def test_memory_usage(hass: HomeAssistant, tmp_path: Path) -> None:
     await hass.async_block_till_done()
 
 
+@pytest.mark.skipif(sys.version_info < (3, 14), reason="still works on python 3.13")
+async def test_memory_usage_py313(hass: HomeAssistant, tmp_path: Path) -> None:
+    """Test raise an error on python3.13."""
+    entry = MockConfigEntry(domain=DOMAIN)
+    entry.add_to_hass(hass)
+
+    assert await hass.config_entries.async_setup(entry.entry_id)
+    await hass.async_block_till_done()
+    assert hass.services.has_service(DOMAIN, SERVICE_MEMORY)
+    with pytest.raises(
+        HomeAssistantError,
+        match="Memory profiling is not supported on Python 3.14. Please use Python 3.13.",
+    ):
+        await hass.services.async_call(
+            DOMAIN, SERVICE_MEMORY, {CONF_SECONDS: 0.000001}, blocking=True
+        )
+
+
 async def test_object_growth_logging(
     hass: HomeAssistant,
     caplog: pytest.LogCaptureFixture,