diff --git a/custom_components/zenkit/config_flow.py b/custom_components/zenkit/config_flow.py
index 54fb8b3..d03b819 100644
--- a/custom_components/zenkit/config_flow.py
+++ b/custom_components/zenkit/config_flow.py
@@ -47,10 +47,9 @@ async def async_step_user(
                 errors["base"] = "unknown"
             else:
                 return self.async_create_entry(
-                    title=user.get("username", "Zenkit"),
-                    data=user_input
+                    title=user.get("username", "Zenkit"), data=user_input
                 )
 
         return self.async_show_form(
             step_id="user", data_schema=STEP_USER_DATA_SCHEMA, errors=errors
-        )
\ No newline at end of file
+        )
diff --git a/custom_components/zenkit/const.py b/custom_components/zenkit/const.py
index 4cb6728..ef88112 100644
--- a/custom_components/zenkit/const.py
+++ b/custom_components/zenkit/const.py
@@ -4,4 +4,4 @@
 API_URL = "https://zenkit.com/api/v1"
 UPDATE_INTERVAL = 60
 ENTRIES_LIMIT = 100
-DUE_DATE_FORMAT = "%Y-%m-%d"
\ No newline at end of file
+DUE_DATE_FORMAT = "%Y-%m-%d"
diff --git a/custom_components/zenkit/coordinator.py b/custom_components/zenkit/coordinator.py
index d810653..e5f5a4d 100644
--- a/custom_components/zenkit/coordinator.py
+++ b/custom_components/zenkit/coordinator.py
@@ -28,7 +28,7 @@ def __init__(self, hass: HomeAssistant, zk: Zenkit) -> None:
             _LOGGER,
             name=DOMAIN,
             update_interval=timedelta(seconds=UPDATE_INTERVAL),
-            always_update=True
+            always_update=True,
         )
 
     async def _async_update_data(self) -> dict:
diff --git a/custom_components/zenkit/exceptions.py b/custom_components/zenkit/exceptions.py
index fd70e90..042b4ef 100644
--- a/custom_components/zenkit/exceptions.py
+++ b/custom_components/zenkit/exceptions.py
@@ -10,5 +10,6 @@ class ZenkitException(HomeAssistantError):
 class CannotLoginException(ZenkitException):
     """Unable to login to the Zenkit API."""
 
+
 class UpdateFailedException(ZenkitException):
-    """Error during update data from Zenkit."""
\ No newline at end of file
+    """Error during update data from Zenkit."""