diff --git a/all-spark-notebook/test/test_spark_notebooks.py b/all-spark-notebook/test/test_spark_notebooks.py
index 5c6abc3c..1a1d8528 100644
--- a/all-spark-notebook/test/test_spark_notebooks.py
+++ b/all-spark-notebook/test/test_spark_notebooks.py
@@ -13,7 +13,7 @@ THIS_DIR = os.path.dirname(os.path.realpath(__file__))
 @pytest.mark.parametrize(
     "test_file",
     # TODO: add local_sparklyr
-    ["local_pyspark", "local_spylon", "local_sparkR", "issue_1168"]
+    ["local_pyspark", "local_spylon", "local_sparkR", "issue_1168"],
 )
 def test_nbconvert(container, test_file):
     """Check if Spark notebooks can be executed"""
diff --git a/base-notebook/test/test_package_managers.py b/base-notebook/test/test_package_managers.py
index 060706e3..49b9bc8a 100644
--- a/base-notebook/test/test_package_managers.py
+++ b/base-notebook/test/test_package_managers.py
@@ -14,8 +14,8 @@ LOGGER = logging.getLogger(__name__)
         ("conda", "--version"),
         ("mamba", "--version"),
         ("npm", "--version"),
-        ("pip", "--version")
-    ]
+        ("pip", "--version"),
+    ],
 )
 def test_package_manager(container, package_manager, version_arg):
     """Test the notebook start-notebook script"""
diff --git a/base-notebook/test/test_start_container.py b/base-notebook/test/test_start_container.py
index 3ffd4356..e1231e19 100644
--- a/base-notebook/test/test_start_container.py
+++ b/base-notebook/test/test_start_container.py
@@ -11,8 +11,8 @@ LOGGER = logging.getLogger(__name__)
     "env,expected_server",
     [
         (["JUPYTER_ENABLE_LAB=yes"], "lab"),
-        (None, "notebook")
-    ]
+        (None, "notebook"),
+    ],
 )
 def test_start_notebook(container, http_client, env, expected_server):
     """Test the notebook start-notebook script"""
diff --git a/minimal-notebook/test/test_nbconvert.py b/minimal-notebook/test/test_nbconvert.py
index 125c5757..6e2675eb 100644
--- a/minimal-notebook/test/test_nbconvert.py
+++ b/minimal-notebook/test/test_nbconvert.py
@@ -16,8 +16,8 @@ THIS_DIR = os.path.dirname(os.path.realpath(__file__))
         ("notebook_math", "pdf"),
         ("notebook_math", "html"),
         ("notebook_svg", "pdf"),
-        ("notebook_svg", "html")
-    ]
+        ("notebook_svg", "html"),
+    ],
 )
 def test_nbconvert(container, test_file, output_format):
     """Check if nbconvert is able to convert a notebook file"""
diff --git a/scipy-notebook/test/test_extensions.py b/scipy-notebook/test/test_extensions.py
index 460760a7..168d92ad 100644
--- a/scipy-notebook/test/test_extensions.py
+++ b/scipy-notebook/test/test_extensions.py
@@ -13,8 +13,8 @@ LOGGER = logging.getLogger(__name__)
     [
         "@bokeh/jupyter_bokeh",
         "@jupyter-widgets/jupyterlab-manager",
-        "jupyter-matplotlib"
-    ]
+        "jupyter-matplotlib",
+    ],
 )
 def test_check_extension(container, extension):
     """Basic check of each extension