diff --git a/example/test_classes.py b/example/test_classes.py
index 2bd0c3b..b55ed0f 100644
--- a/example/test_classes.py
+++ b/example/test_classes.py
@@ -1,6 +1,7 @@
 """Shows how to use relative sorting in test classes, see
 See https://pytest-order.readthedocs.io/en/stable/#referencing-of-tests-in-other-classes-or-modules  # noqa: E501
 """
+
 import pytest
 
 
diff --git a/example/test_combined.py b/example/test_combined.py
index c18e195..5b40242 100644
--- a/example/test_combined.py
+++ b/example/test_combined.py
@@ -1,6 +1,7 @@
 """Shows how combined ordinal and relative sorting is handled.
 See https://pytest-order.readthedocs.io/en/stable/#combination-of-absolute-and-relative-ordering  # noqa: E501
 """
+
 import pytest
 
 
diff --git a/example/test_module1.py b/example/test_module1.py
index f5880d7..348f0f4 100644
--- a/example/test_module1.py
+++ b/example/test_module1.py
@@ -1,6 +1,7 @@
 """One of the test files showing the use of the --order-scope option.
 See https://pytest-order.readthedocs.io/en/stable/#order-scope
 """
+
 import pytest
 
 
diff --git a/example/test_module2.py b/example/test_module2.py
index f5880d7..348f0f4 100644
--- a/example/test_module2.py
+++ b/example/test_module2.py
@@ -1,6 +1,7 @@
 """One of the test files showing the use of the --order-scope option.
 See https://pytest-order.readthedocs.io/en/stable/#order-scope
 """
+
 import pytest
 
 
diff --git a/example/test_modules_b.py b/example/test_modules_b.py
index 851711e..36f28dc 100644
--- a/example/test_modules_b.py
+++ b/example/test_modules_b.py
@@ -1,6 +1,7 @@
 """Example showing ordering relative to tests in other modules.
 See https://pytest-order.readthedocs.io/en/stable/#referencing-of-tests-in-other-classes-or-modules  # noqa: E501
 """
+
 import pytest
 
 
diff --git a/example/test_number.py b/example/test_number.py
index 1e8f73e..36a490c 100644
--- a/example/test_number.py
+++ b/example/test_number.py
@@ -2,6 +2,7 @@
 and the use of the long form (index attribute) and short form (number only).
 See https://pytest-order.readthedocs.io/en/stable/#order-by-index
 """
+
 import pytest
 
 
diff --git a/example/test_ordinals.py b/example/test_ordinals.py
index 769573c..0a2cf29 100644
--- a/example/test_ordinals.py
+++ b/example/test_ordinals.py
@@ -1,6 +1,7 @@
 """Shows how to use ordinal names for sorting.
 See https://pytest-order.readthedocs.io/en/stable/#order-using-ordinals
 """
+
 import pytest
 
 
diff --git a/example/test_quickstart.py b/example/test_quickstart.py
index 1a2cf1b..2065f9f 100644
--- a/example/test_quickstart.py
+++ b/example/test_quickstart.py
@@ -1,6 +1,7 @@
 """Test with ordering (as opposed to test.py) from the quick start chapter.
 See https://pytest-order.readthedocs.io/en/stable/#quickstart
 """
+
 import pytest
 
 
diff --git a/example/test_relative.py b/example/test_relative.py
index adb8624..4d6e483 100644
--- a/example/test_relative.py
+++ b/example/test_relative.py
@@ -1,6 +1,7 @@
 """Shows how to sort tests relatively to each other, see
 https://pytest-order.readthedocs.io/en/stable/#order-relative-to-other-tests
 """
+
 import pytest
 
 
diff --git a/example/test_sort_breaks_dependency.py b/example/test_sort_breaks_dependency.py
index aa3bcde..3c3547e 100644
--- a/example/test_sort_breaks_dependency.py
+++ b/example/test_sort_breaks_dependency.py
@@ -2,6 +2,7 @@
 dependency.
 See https://pytest-order.readthedocs.io/en/stable/#order-dependencies
 """
+
 import pytest
 
 
diff --git a/example/test_sort_dependency.py b/example/test_sort_dependency.py
index e8c5450..eaced9f 100644
--- a/example/test_sort_dependency.py
+++ b/example/test_sort_dependency.py
@@ -1,6 +1,7 @@
 """Test showing the behavior of the --order-dependencies option.
 See https://pytest-order.readthedocs.io/en/stable/#order-dependencies
 """
+
 import pytest
 
 
diff --git a/example/test_sparse_ordering.py b/example/test_sparse_ordering.py
index fea533e..f138157 100644
--- a/example/test_sparse_ordering.py
+++ b/example/test_sparse_ordering.py
@@ -1,6 +1,7 @@
 """Test file showing the behavior of the --sparse-ordering option.
 See https://pytest-order.readthedocs.io/en/stable/#sparse-ordering
 """
+
 import pytest