diff --git a/executorlib/cache/shared.py b/executorlib/cache/shared.py
index c1f3adab..9cd540c0 100644
--- a/executorlib/cache/shared.py
+++ b/executorlib/cache/shared.py
@@ -118,7 +118,9 @@ def execute_tasks_h5(
                         ]
                     else:
                         if len(future_wait_key_lst) > 0:
-                            raise ValueError("Future objects are not supported as input if disable_dependencies=True.")
+                            raise ValueError(
+                                "Future objects are not supported as input if disable_dependencies=True."
+                            )
                         task_dependent_lst = []
                     process_dict[task_key] = execute_function(
                         command=_get_execute_command(
diff --git a/tests/test_cache_executor_serial.py b/tests/test_cache_executor_serial.py
index 3e98b1e5..c5962aac 100644
--- a/tests/test_cache_executor_serial.py
+++ b/tests/test_cache_executor_serial.py
@@ -48,7 +48,9 @@ def test_executor_dependence_mixed(self):
 
     def test_executor_dependence_error(self):
         with self.assertRaises(ValueError):
-            with FileExecutor(execute_function=execute_in_subprocess, disable_dependencies=True) as exe:
+            with FileExecutor(
+                execute_function=execute_in_subprocess, disable_dependencies=True
+            ) as exe:
                 exe.submit(my_funct, 1, b=exe.submit(my_funct, 1, b=2))
 
     def test_executor_working_directory(self):