diff --git a/tests/test_app.py b/tests/test_app.py
index f6170bc..288edc6 100644
--- a/tests/test_app.py
+++ b/tests/test_app.py
@@ -5,6 +5,7 @@
 3. in run_once, come up with a way to verify the behavior you wanted.
 run_once runs your app through one cycle of the event loop and then terminates
 """
+
 import io
 import os
 from contextlib import redirect_stdout
diff --git a/tests/test_slack_command_bot_component.py b/tests/test_slack_command_bot_component.py
index fe4f75c..8ad2395 100644
--- a/tests/test_slack_command_bot_component.py
+++ b/tests/test_slack_command_bot_component.py
@@ -3,6 +3,7 @@
 1. Init the component.
 2. call .run()
 """
+
 import threading
 import time