diff --git a/catalog/dags/common/slack.py b/catalog/dags/common/slack.py
index c7e02d4ac9d..2eddd13fc51 100644
--- a/catalog/dags/common/slack.py
+++ b/catalog/dags/common/slack.py
@@ -57,7 +57,7 @@
 
 from airflow.decorators import task
 from airflow.exceptions import AirflowNotFoundException
-from airflow.models import Variable, DAG
+from airflow.models import DAG, Variable
 from airflow.providers.http.hooks.http import HttpHook
 from requests import Response
 from typing_extensions import NotRequired, TypedDict
@@ -423,7 +423,7 @@ def notify_slack(
     text: str,
     username: str = "Airflow Notification",
     icon_emoji: str = ":airflow:",
-    dag: DAG | None = None
+    dag: DAG | None = None,
 ) -> None:
     send_message(
         text,