diff --git a/homeassistant/components/cert_expiry/config_flow.py b/homeassistant/components/cert_expiry/config_flow.py
index 78450d247b9..14532aea65f 100644
--- a/homeassistant/components/cert_expiry/config_flow.py
+++ b/homeassistant/components/cert_expiry/config_flow.py
@@ -2,13 +2,14 @@
 import logging
 import socket
 import ssl
+
 import voluptuous as vol
 
 from homeassistant import config_entries
-from homeassistant.const import CONF_PORT, CONF_NAME, CONF_HOST
+from homeassistant.const import CONF_HOST, CONF_NAME, CONF_PORT
 from homeassistant.core import HomeAssistant, callback
 
-from .const import DOMAIN, DEFAULT_PORT, DEFAULT_NAME
+from .const import DEFAULT_NAME, DEFAULT_PORT, DOMAIN
 from .helper import get_cert
 
 _LOGGER = logging.getLogger(__name__)
diff --git a/homeassistant/components/cert_expiry/sensor.py b/homeassistant/components/cert_expiry/sensor.py
index 3022c7bd42b..3a76575dfdd 100644
--- a/homeassistant/components/cert_expiry/sensor.py
+++ b/homeassistant/components/cert_expiry/sensor.py
@@ -1,24 +1,24 @@
 """Counter for the days until an HTTPS (TLS) certificate will expire."""
+from datetime import datetime, timedelta
 import logging
 import socket
 import ssl
-from datetime import datetime, timedelta
 
 import voluptuous as vol
 
-import homeassistant.helpers.config_validation as cv
-from homeassistant.config_entries import SOURCE_IMPORT
 from homeassistant.components.sensor import PLATFORM_SCHEMA
+from homeassistant.config_entries import SOURCE_IMPORT
 from homeassistant.const import (
-    CONF_NAME,
     CONF_HOST,
+    CONF_NAME,
     CONF_PORT,
     EVENT_HOMEASSISTANT_START,
 )
 from homeassistant.core import callback
+import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity import Entity
 
-from .const import DOMAIN, DEFAULT_NAME, DEFAULT_PORT
+from .const import DEFAULT_NAME, DEFAULT_PORT, DOMAIN
 from .helper import get_cert
 
 _LOGGER = logging.getLogger(__name__)
diff --git a/tests/components/cert_expiry/test_config_flow.py b/tests/components/cert_expiry/test_config_flow.py
index 3754551c230..bcd1482195d 100644
--- a/tests/components/cert_expiry/test_config_flow.py
+++ b/tests/components/cert_expiry/test_config_flow.py
@@ -1,13 +1,14 @@
 """Tests for the Cert Expiry config flow."""
-import pytest
-import ssl
 import socket
+import ssl
 from unittest.mock import patch
 
+import pytest
+
 from homeassistant import data_entry_flow
 from homeassistant.components.cert_expiry import config_flow
 from homeassistant.components.cert_expiry.const import DEFAULT_NAME, DEFAULT_PORT
-from homeassistant.const import CONF_PORT, CONF_NAME, CONF_HOST
+from homeassistant.const import CONF_HOST, CONF_NAME, CONF_PORT
 
 from tests.common import MockConfigEntry, mock_coro