diff --git a/.strict-typing b/.strict-typing
index 23b4ed76513..2ad7d0d1107 100644
--- a/.strict-typing
+++ b/.strict-typing
@@ -74,6 +74,7 @@ homeassistant.components.vacuum.*
 homeassistant.components.water_heater.*
 homeassistant.components.weather.*
 homeassistant.components.websocket_api.*
+homeassistant.components.zodiac.*
 homeassistant.components.zeroconf.*
 homeassistant.components.zone.*
 homeassistant.components.zwave_js.*
diff --git a/homeassistant/components/zodiac/__init__.py b/homeassistant/components/zodiac/__init__.py
index d00cc560f22..c19b7a45ac2 100644
--- a/homeassistant/components/zodiac/__init__.py
+++ b/homeassistant/components/zodiac/__init__.py
@@ -3,6 +3,7 @@ import voluptuous as vol
 
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.discovery import async_load_platform
+from homeassistant.helpers.typing import ConfigType
 
 from .const import DOMAIN
 
@@ -12,7 +13,7 @@ CONFIG_SCHEMA = vol.Schema(
 )
 
 
-async def async_setup(hass: HomeAssistant, config: dict):
+async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     """Set up the zodiac component."""
     hass.async_create_task(async_load_platform(hass, "sensor", DOMAIN, {}, config))
 
diff --git a/homeassistant/components/zodiac/sensor.py b/homeassistant/components/zodiac/sensor.py
index 4c037a7aa02..80a4f782915 100644
--- a/homeassistant/components/zodiac/sensor.py
+++ b/homeassistant/components/zodiac/sensor.py
@@ -1,5 +1,10 @@
 """Support for tracking the zodiac sign."""
+from __future__ import annotations
+
 from homeassistant.components.sensor import SensorEntity
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 from homeassistant.util.dt import as_local, utcnow
 
 from .const import (
@@ -154,7 +159,12 @@ ZODIAC_ICONS = {
 }
 
 
-async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
+async def async_setup_platform(
+    hass: HomeAssistant,
+    config: ConfigType,
+    async_add_entities: AddEntitiesCallback,
+    discovery_info: DiscoveryInfoType | None = None,
+) -> None:
     """Set up the Zodiac sensor platform."""
     if discovery_info is None:
         return
@@ -165,42 +175,42 @@ async def async_setup_platform(hass, config, async_add_entities, discovery_info=
 class ZodiacSensor(SensorEntity):
     """Representation of a Zodiac sensor."""
 
-    def __init__(self):
+    def __init__(self) -> None:
         """Initialize the zodiac sensor."""
-        self._attrs = None
-        self._state = None
+        self._attrs: dict[str, str] = {}
+        self._state: str = ""
 
     @property
-    def unique_id(self):
+    def unique_id(self) -> str:
         """Return a unique ID."""
         return DOMAIN
 
     @property
-    def name(self):
+    def name(self) -> str:
         """Return the name of the entity."""
         return "Zodiac"
 
     @property
-    def device_class(self):
+    def device_class(self) -> str:
         """Return the device class of the entity."""
         return "zodiac__sign"
 
     @property
-    def state(self):
+    def state(self) -> str:
         """Return the state of the device."""
         return self._state
 
     @property
-    def icon(self):
-        """Icon to use in the frontend, if any."""
+    def icon(self) -> str | None:
+        """Icon to use in the frontend."""
         return ZODIAC_ICONS.get(self._state)
 
     @property
-    def extra_state_attributes(self):
+    def extra_state_attributes(self) -> dict[str, str]:
         """Return the state attributes."""
         return self._attrs
 
-    async def async_update(self):
+    async def async_update(self) -> None:
         """Get the time and updates the state."""
         today = as_local(utcnow()).date()
 
diff --git a/mypy.ini b/mypy.ini
index bada042219a..c25dc4ec1f6 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -825,6 +825,17 @@ no_implicit_optional = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.zodiac.*]
+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.zeroconf.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true