diff --git a/homeassistant/components/hassio/__init__.py b/homeassistant/components/hassio/__init__.py
index b65bea04e2a6..b38caf53c336 100644
--- a/homeassistant/components/hassio/__init__.py
+++ b/homeassistant/components/hassio/__init__.py
@@ -1,12 +1,10 @@
 """Support for Hass.io."""
 
 import asyncio
-from dataclasses import replace
 from functools import partial
 import logging
 import os
 import struct
-from typing import Any
 
 from aiohasupervisor import SupervisorBadRequestError, SupervisorError
 from aiohasupervisor.models import (
@@ -20,19 +18,9 @@ from homeassistant.auth.const import GROUP_ID_ADMIN
 from homeassistant.auth.models import RefreshToken, User
 from homeassistant.components import frontend
 from homeassistant.components.homeassistant import async_set_stop_handler
-from homeassistant.components.http import (
-    CONF_SERVER_HOST,
-    CONF_SERVER_PORT,
-    CONF_SSL_CERTIFICATE,
-)
 from homeassistant.components.onboarding import async_is_onboarded
 from homeassistant.config_entries import SOURCE_SYSTEM, ConfigEntry
-from homeassistant.const import (
-    EVENT_CORE_CONFIG_UPDATE,
-    HASSIO_USER_NAME,
-    SERVER_PORT,
-    Platform,
-)
+from homeassistant.const import EVENT_CORE_CONFIG_UPDATE, HASSIO_USER_NAME, Platform
 from homeassistant.core import Event, HomeAssistant, callback
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers import (
@@ -69,7 +57,6 @@ from .const import (
     DATA_COMPONENT,
     DATA_CONFIG_STORE,
     DATA_HASSIO_HOST,
-    DATA_HASSIO_HTTP_CONFIG,
     DATA_HASSIO_SUPERVISOR_USER,
     DATA_KEY_SUPERVISOR_ISSUES,
     DOMAIN,
@@ -246,7 +233,6 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     websession = async_get_clientsession(hass)
     hass.data[DATA_COMPONENT] = HassIO(hass.loop, websession, host)
     hass.data[DATA_HASSIO_HOST] = host
-    hass.data[DATA_HASSIO_HTTP_CONFIG] = config.get("http", {})
 
     # Load the store
     config_store = HassioConfig(hass)
@@ -399,23 +385,17 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
 
     entry.async_on_unload(hass.bus.async_listen(EVENT_CORE_CONFIG_UPDATE, push_config))
 
-    http_config: dict[str, Any] = hass.data.get(DATA_HASSIO_HTTP_CONFIG, {})
-
     async def update_hass_api(refresh_token: RefreshToken) -> None:
         """Update Home Assistant API data on Hass.io."""
+        # hass.config.api is always set here: hassio depends on http, and the
+        # http integration assigns hass.config.api during its async_setup.
+        assert hass.config.api is not None
         options = HomeAssistantOptions(
-            ssl=CONF_SSL_CERTIFICATE in http_config,
-            port=http_config.get(CONF_SERVER_PORT) or SERVER_PORT,
+            ssl=hass.config.api.use_ssl,
+            port=hass.config.api.port,
             refresh_token=refresh_token.token,
         )
 
-        if http_config.get(CONF_SERVER_HOST) is not None:
-            options = replace(options, watchdog=False)
-            _LOGGER.warning(
-                "Found incompatible HTTP option 'server_host'. Watchdog feature"
-                " disabled"
-            )
-
         try:
             await supervisor_client.homeassistant.set_options(options)
         except SupervisorError as err:
diff --git a/homeassistant/components/hassio/const.py b/homeassistant/components/hassio/const.py
index c1ece85104ef..418f956c46c2 100644
--- a/homeassistant/components/hassio/const.py
+++ b/homeassistant/components/hassio/const.py
@@ -2,7 +2,7 @@
 
 from datetime import timedelta
 from enum import StrEnum
-from typing import TYPE_CHECKING, Any
+from typing import TYPE_CHECKING
 
 from homeassistant.util.hass_dict import HassKey
 
@@ -145,7 +145,6 @@ DATA_KEY_CORE = "core"
 DATA_KEY_HOST = "host"
 DATA_KEY_SUPERVISOR_ISSUES: HassKey[SupervisorIssues] = HassKey("supervisor_issues")
 DATA_KEY_MOUNTS = "mounts"
-DATA_HASSIO_HTTP_CONFIG: HassKey[dict[str, Any]] = HassKey("hassio_http_config")
 DATA_HASSIO_HOST: HassKey[str] = HassKey("hassio_host")
 DATA_HASSIO_SUPERVISOR_USER: HassKey[User] = HassKey("hassio_supervisor_user")
 
diff --git a/tests/components/hassio/test_init.py b/tests/components/hassio/test_init.py
index 281ebd9fe8b9..1ce13995a339 100644
--- a/tests/components/hassio/test_init.py
+++ b/tests/components/hassio/test_init.py
@@ -308,7 +308,11 @@ async def test_setup_api_push_api_data_error(
 async def test_setup_api_push_api_data_server_host(
     hass: HomeAssistant, supervisor_client: AsyncMock
 ) -> None:
-    """Test setup with API push with active server host."""
+    """Test setup with API push with active server host.
+
+    A configured server_host no longer disables the watchdog: Supervisor
+    reaches Core over the Unix socket, independent of the HTTP bind address.
+    """
     with patch.dict(os.environ, MOCK_ENVIRON):
         result = await async_setup_component(
             hass,
@@ -320,7 +324,7 @@ async def test_setup_api_push_api_data_server_host(
     assert result
     assert len(supervisor_client.mock_calls) == 16
     supervisor_client.homeassistant.set_options.assert_called_once_with(
-        HomeAssistantOptions(ssl=False, port=9999, refresh_token=ANY, watchdog=False)
+        HomeAssistantOptions(ssl=False, port=9999, refresh_token=ANY)
     )