diff --git a/custom_components/simple_pid_controller/__init__.py b/custom_components/simple_pid_controller/__init__.py
index 0221e37..bedf4b1 100644
--- a/custom_components/simple_pid_controller/__init__.py
+++ b/custom_components/simple_pid_controller/__init__.py
@@ -4,16 +4,29 @@
 
 import logging
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import Platform, ATTR_ENTITY_ID
+from homeassistant.const import (
+    ATTR_ENTITY_ID,
+    MAJOR_VERSION,
+    MINOR_VERSION,
+    Platform,
+)
 from homeassistant.core import HomeAssistant, ServiceCall
 from homeassistant.exceptions import ConfigEntryNotReady, HomeAssistantError
 from homeassistant.helpers import entity_registry as er
 from collections import deque
 from dataclasses import dataclass
 from simple_pid import PID
-import voluptuous as vol
 import homeassistant.helpers.config_validation as cv
 
+# Home Assistant 2026.10 replaced voluptuous with probatio, an API-compatible
+# successor, and from then on expects probatio schemas. 2026.9 already ships
+# probatio but still expects voluptuous ones, so the version decides, not
+# whether probatio happens to be importable.
+if (MAJOR_VERSION, MINOR_VERSION) >= (2026, 10):
+    import probatio as vol
+else:
+    import voluptuous as vol  # type: ignore[no-redef]
+
 from .coordinator import PIDDataCoordinator
 
 from .const import (
diff --git a/custom_components/simple_pid_controller/config_flow.py b/custom_components/simple_pid_controller/config_flow.py
index f2394ef..1f8a148 100644
--- a/custom_components/simple_pid_controller/config_flow.py
+++ b/custom_components/simple_pid_controller/config_flow.py
@@ -5,17 +5,25 @@
 import logging
 from typing import Any
 
-import voluptuous as vol
-
 from homeassistant.config_entries import (
     ConfigEntry,
     ConfigFlow,
     ConfigFlowResult,
     OptionsFlow,
 )
+from homeassistant.const import MAJOR_VERSION, MINOR_VERSION
 from homeassistant.core import callback
 from homeassistant.helpers.selector import selector
 
+# Home Assistant 2026.10 replaced voluptuous with probatio, an API-compatible
+# successor, and from then on expects probatio schemas. 2026.9 already ships
+# probatio but still expects voluptuous ones, so the version decides, not
+# whether probatio happens to be importable.
+if (MAJOR_VERSION, MINOR_VERSION) >= (2026, 10):
+    import probatio as vol
+else:
+    import voluptuous as vol  # type: ignore[no-redef]
+
 from .const import (
     DOMAIN,
     CONF_NAME,
@@ -54,7 +62,10 @@ async def async_step_user(
     ) -> ConfigFlowResult:
         """Handle the initial step."""
 
-        schema = vol.Schema(
+        # Any: whether async_show_form takes a probatio or a voluptuous schema
+        # depends on the Home Assistant version (see the import above), and the
+        # pre-commit hook and the lint job type check against different ones.
+        schema: Any = vol.Schema(
             {
                 vol.Required(CONF_NAME, default=DEFAULT_NAME): str,
                 vol.Required(CONF_SENSOR_ENTITY_ID): selector(
@@ -160,7 +171,8 @@ async def async_step_init(
             for key in DEFAULT_STEPS
         }
 
-        options_schema = vol.Schema(
+        # Any, for the reason given in async_step_user.
+        options_schema: Any = vol.Schema(
             {
                 vol.Required(
                     CONF_SENSOR_ENTITY_ID,