diff --git a/tests/components/mailgun/test_init.py b/tests/components/mailgun/test_init.py
index 908e98ae31e..2e60c56faa4 100644
--- a/tests/components/mailgun/test_init.py
+++ b/tests/components/mailgun/test_init.py
@@ -10,7 +10,7 @@ from homeassistant import config_entries
 from homeassistant.components import mailgun, webhook
 from homeassistant.config import async_process_ha_core_config
 from homeassistant.const import CONF_API_KEY, CONF_DOMAIN
-from homeassistant.core import HomeAssistant, callback
+from homeassistant.core import Event, HomeAssistant, callback
 from homeassistant.data_entry_flow import FlowResultType
 from homeassistant.setup import async_setup_component
 
@@ -29,7 +29,7 @@ async def http_client(
 
 
 @pytest.fixture
-async def webhook_id_with_api_key(hass):
+async def webhook_id_with_api_key(hass: HomeAssistant) -> str:
     """Initialize the Mailgun component and get the webhook_id."""
     await async_setup_component(
         hass,
@@ -53,7 +53,7 @@ async def webhook_id_with_api_key(hass):
 
 
 @pytest.fixture
-async def webhook_id_without_api_key(hass):
+async def webhook_id_without_api_key(hass: HomeAssistant) -> str:
     """Initialize the Mailgun component and get the webhook_id w/o API key."""
     await async_setup_component(hass, mailgun.DOMAIN, {})
 
@@ -73,7 +73,7 @@ async def webhook_id_without_api_key(hass):
 
 
 @pytest.fixture
-async def mailgun_events(hass):
+async def mailgun_events(hass: HomeAssistant) -> list[Event]:
     """Return a list of mailgun_events triggered."""
     events = []