diff --git a/.strict-typing b/.strict-typing
index 1213a8b73b7..6796c5f3866 100644
--- a/.strict-typing
+++ b/.strict-typing
@@ -32,6 +32,7 @@ homeassistant.components.abode.*
 homeassistant.components.acer_projector.*
 homeassistant.components.accuweather.*
 homeassistant.components.actiontec.*
+homeassistant.components.adguard.*
 homeassistant.components.aftership.*
 homeassistant.components.air_quality.*
 homeassistant.components.airly.*
diff --git a/homeassistant/components/adguard/config_flow.py b/homeassistant/components/adguard/config_flow.py
index c7cb261d7c8..bc9b11c9a72 100644
--- a/homeassistant/components/adguard/config_flow.py
+++ b/homeassistant/components/adguard/config_flow.py
@@ -27,7 +27,7 @@ class AdGuardHomeFlowHandler(ConfigFlow, domain=DOMAIN):
 
     VERSION = 1
 
-    _hassio_discovery = None
+    _hassio_discovery: dict[str, Any] | None = None
 
     async def _show_setup_form(
         self, errors: dict[str, str] | None = None
diff --git a/homeassistant/components/adguard/switch.py b/homeassistant/components/adguard/switch.py
index f6c41e7f2e8..0cb7a48fee6 100644
--- a/homeassistant/components/adguard/switch.py
+++ b/homeassistant/components/adguard/switch.py
@@ -3,6 +3,7 @@ from __future__ import annotations
 
 from datetime import timedelta
 import logging
+from typing import Any
 
 from adguardhome import AdGuardHome, AdGuardHomeConnectionError, AdGuardHomeError
 
@@ -76,7 +77,7 @@ class AdGuardHomeSwitch(AdGuardHomeDeviceEntity, SwitchEntity):
         """Return the state of the switch."""
         return self._state
 
-    async def async_turn_off(self, **kwargs) -> None:
+    async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn off the switch."""
         try:
             await self._adguard_turn_off()
@@ -88,7 +89,7 @@ class AdGuardHomeSwitch(AdGuardHomeDeviceEntity, SwitchEntity):
         """Turn off the switch."""
         raise NotImplementedError()
 
-    async def async_turn_on(self, **kwargs) -> None:
+    async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn on the switch."""
         try:
             await self._adguard_turn_on()
diff --git a/mypy.ini b/mypy.ini
index 7a927a3c6a7..2bb0f5b5462 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -153,6 +153,17 @@ no_implicit_optional = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.adguard.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+no_implicit_optional = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.aftership.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true