diff --git a/homeassistant/components/onvif/config_flow.py b/homeassistant/components/onvif/config_flow.py
index 5eef092a5cb..d9cf28f3e8b 100644
--- a/homeassistant/components/onvif/config_flow.py
+++ b/homeassistant/components/onvif/config_flow.py
@@ -26,7 +26,7 @@ from homeassistant.const import (
     CONF_PORT,
     CONF_USERNAME,
 )
-from homeassistant.core import callback
+from homeassistant.core import HomeAssistant, callback
 
 from .const import CONF_DEVICE_ID, DEFAULT_ARGUMENTS, DEFAULT_PORT, DOMAIN, LOGGER
 from .device import get_device
@@ -45,7 +45,7 @@ def wsdiscovery() -> list[Service]:
     return services
 
 
-async def async_discovery(hass) -> list[dict[str, Any]]:
+async def async_discovery(hass: HomeAssistant) -> list[dict[str, Any]]:
     """Return if there are devices that can be discovered."""
     LOGGER.debug("Starting ONVIF discovery")
     services = await hass.async_add_executor_job(wsdiscovery)
diff --git a/homeassistant/components/onvif/device.py b/homeassistant/components/onvif/device.py
index 3d74f1e4664..1556ae8a1fe 100644
--- a/homeassistant/components/onvif/device.py
+++ b/homeassistant/components/onvif/device.py
@@ -561,7 +561,13 @@ class ONVIFDevice:
                 LOGGER.error("Error trying to set Imaging settings: %s", err)
 
 
-def get_device(hass, host, port, username, password) -> ONVIFCamera:
+def get_device(
+    hass: HomeAssistant,
+    host: str,
+    port: int,
+    username: str | None,
+    password: str | None,
+) -> ONVIFCamera:
     """Get ONVIFCamera instance."""
     return ONVIFCamera(
         host,