diff --git a/tests/test_examples/conftest.py b/tests/test_examples/conftest.py
index a1539d144..33af78571 100644
--- a/tests/test_examples/conftest.py
+++ b/tests/test_examples/conftest.py
@@ -1,8 +1,8 @@
-
 import pytest
 
 
 @pytest.fixture(scope="session")
 def examples_path():
     from pathlib import Path
+
     return Path(__file__).parents[2] / "examples"
diff --git a/tests/test_examples/test_examples.py b/tests/test_examples/test_examples.py
index b7895ed23..42cf7cf53 100644
--- a/tests/test_examples/test_examples.py
+++ b/tests/test_examples/test_examples.py
@@ -1,4 +1,3 @@
-
 import pytest
 
 from tests.utils import run_notebook
diff --git a/tests/utils/jupyter.py b/tests/utils/jupyter.py
index 8a825cd8e..fad68444b 100644
--- a/tests/utils/jupyter.py
+++ b/tests/utils/jupyter.py
@@ -1,7 +1,7 @@
-
 import nbformat
 from nbconvert.preprocessors import ExecutePreprocessor
 
+
 def run_notebook(path):
     with open(str(path)) as f:
         nb = nbformat.read(f, nbformat.NO_CONVERT)