diff --git a/homeassistant/components/google_assistant/helpers.py b/homeassistant/components/google_assistant/helpers.py
index 6f81ddebdb4..0b9b12f2f4c 100644
--- a/homeassistant/components/google_assistant/helpers.py
+++ b/homeassistant/components/google_assistant/helpers.py
@@ -51,7 +51,7 @@ LOCAL_SDK_MIN_VERSION = AwesomeVersion("2.1.5")
 @callback
 def _get_registry_entries(
     hass: HomeAssistant, entity_id: str
-) -> tuple[device_registry.DeviceEntry, area_registry.AreaEntry]:
+) -> tuple[device_registry.DeviceEntry | None, area_registry.AreaEntry | None]:
     """Get registry entries."""
     ent_reg = entity_registry.async_get(hass)
     dev_reg = device_registry.async_get(hass)
diff --git a/homeassistant/components/google_assistant/http.py b/homeassistant/components/google_assistant/http.py
index 3f3db1f2b5b..84d5e4a3364 100644
--- a/homeassistant/components/google_assistant/http.py
+++ b/homeassistant/components/google_assistant/http.py
@@ -59,7 +59,7 @@ def _get_homegraph_jwt(time, iss, key):
 
 async def _get_homegraph_token(
     hass: HomeAssistant, jwt_signed: str
-) -> dict[str, Any] | list[str, Any] | Any:
+) -> dict[str, Any] | list[Any] | Any:
     headers = {
         "Authorization": f"Bearer {jwt_signed}",
         "Content-Type": "application/x-www-form-urlencoded",
diff --git a/homeassistant/components/google_assistant/report_state.py b/homeassistant/components/google_assistant/report_state.py
index 4e8ac1624cc..737b54c8b1e 100644
--- a/homeassistant/components/google_assistant/report_state.py
+++ b/homeassistant/components/google_assistant/report_state.py
@@ -3,6 +3,7 @@ from __future__ import annotations
 
 from collections import deque
 import logging
+from typing import Any
 
 from homeassistant.const import MATCH_ALL
 from homeassistant.core import CALLBACK_TYPE, HassJob, HomeAssistant, callback
@@ -28,7 +29,7 @@ def async_enable_report_state(hass: HomeAssistant, google_config: AbstractConfig
     """Enable state reporting."""
     checker = None
     unsub_pending: CALLBACK_TYPE | None = None
-    pending = deque([{}])
+    pending: deque[dict[str, Any]] = deque([{}])
 
     async def report_states(now=None):
         """Report the states."""
diff --git a/homeassistant/components/google_assistant/trait.py b/homeassistant/components/google_assistant/trait.py
index 42fc43197ea..ee41dd0c678 100644
--- a/homeassistant/components/google_assistant/trait.py
+++ b/homeassistant/components/google_assistant/trait.py
@@ -176,6 +176,8 @@ def _next_selected(items: list[str], selected: str | None) -> str | None:
 
     If selected is missing in items, None is returned
     """
+    if selected is None:
+        return None
     try:
         index = items.index(selected)
     except ValueError:
@@ -188,7 +190,7 @@ def _next_selected(items: list[str], selected: str | None) -> str | None:
 class _Trait:
     """Represents a Trait inside Google Assistant skill."""
 
-    commands = []
+    commands: list[str] = []
 
     @staticmethod
     def might_2fa(domain, features, device_class):
@@ -1701,7 +1703,7 @@ class InputSelectorTrait(_Trait):
     name = TRAIT_INPUTSELECTOR
     commands = [COMMAND_INPUT, COMMAND_NEXT_INPUT, COMMAND_PREVIOUS_INPUT]
 
-    SYNONYMS = {}
+    SYNONYMS: dict[str, list[str]] = {}
 
     @staticmethod
     def supported(domain, features, device_class, _):
@@ -2197,7 +2199,7 @@ class MediaStateTrait(_Trait):
     """
 
     name = TRAIT_MEDIA_STATE
-    commands = []
+    commands: list[str] = []
 
     activity_lookup = {
         STATE_OFF: "INACTIVE",
@@ -2314,7 +2316,7 @@ class SensorStateTrait(_Trait):
     }
 
     name = TRAIT_SENSOR_STATE
-    commands = []
+    commands: list[str] = []
 
     @classmethod
     def supported(cls, domain, features, device_class, _):
diff --git a/mypy.ini b/mypy.ini
index f29bcf92720..5c5675bcb37 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -2662,18 +2662,6 @@ ignore_errors = true
 [mypy-homeassistant.components.evohome.water_heater]
 ignore_errors = true
 
-[mypy-homeassistant.components.google_assistant.helpers]
-ignore_errors = true
-
-[mypy-homeassistant.components.google_assistant.http]
-ignore_errors = true
-
-[mypy-homeassistant.components.google_assistant.report_state]
-ignore_errors = true
-
-[mypy-homeassistant.components.google_assistant.trait]
-ignore_errors = true
-
 [mypy-homeassistant.components.hassio]
 ignore_errors = true
 
diff --git a/script/hassfest/mypy_config.py b/script/hassfest/mypy_config.py
index f058cfd391f..a1955c51993 100644
--- a/script/hassfest/mypy_config.py
+++ b/script/hassfest/mypy_config.py
@@ -29,10 +29,6 @@ IGNORED_MODULES: Final[list[str]] = [
     "homeassistant.components.evohome",
     "homeassistant.components.evohome.climate",
     "homeassistant.components.evohome.water_heater",
-    "homeassistant.components.google_assistant.helpers",
-    "homeassistant.components.google_assistant.http",
-    "homeassistant.components.google_assistant.report_state",
-    "homeassistant.components.google_assistant.trait",
     "homeassistant.components.hassio",
     "homeassistant.components.hassio.auth",
     "homeassistant.components.hassio.binary_sensor",