diff --git a/approval_utilities/utils.py b/approval_utilities/utils.py
index ca7e646..25d9521 100644
--- a/approval_utilities/utils.py
+++ b/approval_utilities/utils.py
@@ -58,10 +58,13 @@ def is_windows_os() -> bool:
 def create_empty_file(file_path: str) -> None:
     try:
         import empty_files.empty_files
+
         empty_files.empty_files.create_empty_file(file_path)
     except ImportError as e:
         print("Error importing empty_files", e)
         raise
+
+
 def ensure_file_exists(approved_path: str) -> None:
     print("approved_path check", approved_path)
     if not os.path.isfile(approved_path):
@@ -82,7 +85,10 @@ def print_grid(width, height, cell_print_func):
         result += "\n"
     return result
 
+
 _V = TypeVar("_V")
 _K = TypeVar("_K")
-def filter_values(filter: Callable[[_V],bool], a_dict: Dict[_K,_V]) -> Dict[_K,_V]:
-    return {k: v for k, v in a_dict.items() if filter(v)}
\ No newline at end of file
+
+
+def filter_values(filter: Callable[[_V], bool], a_dict: Dict[_K, _V]) -> Dict[_K, _V]:
+    return {k: v for k, v in a_dict.items() if filter(v)}
diff --git a/approvaltests/reporters/generic_diff_reporter.py b/approvaltests/reporters/generic_diff_reporter.py
index 94cc108..d682704 100644
--- a/approvaltests/reporters/generic_diff_reporter.py
+++ b/approvaltests/reporters/generic_diff_reporter.py
@@ -33,11 +33,10 @@ def __init__(self, config: GenericDiffReporterConfig) -> None:
         self.extra_args = config.extra_args
 
     def __str__(self) -> str:
-        config = filter_values(lambda v: bool(v), {
-            "name": self.name,
-            "path": self.path,
-            "arguments": self.extra_args
-        })
+        config = filter_values(
+            lambda v: bool(v),
+            {"name": self.name, "path": self.path, "arguments": self.extra_args},
+        )
         return to_json(config)
 
     @staticmethod
diff --git a/approvaltests/reporters/report_with_beyond_compare.py b/approvaltests/reporters/report_with_beyond_compare.py
index eb342be..ee6a484 100644
--- a/approvaltests/reporters/report_with_beyond_compare.py
+++ b/approvaltests/reporters/report_with_beyond_compare.py
@@ -20,7 +20,8 @@ class ReportWithBeyondCompareMac(GenericDiffReporter):
     def __init__(self):
         super().__init__(
             config=GenericDiffReporterConfig(
-                name=self.__class__.__name__, path='/Applications/Beyond Compare.app/Contents/MacOS/BCompare'
+                name=self.__class__.__name__,
+                path="/Applications/Beyond Compare.app/Contents/MacOS/BCompare",
             )
         )
 
diff --git a/docs/Contribute.md b/docs/Contribute.md
index 44c3479..7d42e6f 100644
--- a/docs/Contribute.md
+++ b/docs/Contribute.md
@@ -8,6 +8,7 @@
     * [Zoom Link](#zoom-link)
     * [Requirements](#requirements)
     * [Opening Notice](#opening-notice)
+    * [Startup Checklist](#startup-checklist)
     * [Anydesk](#anydesk)
   * [Solo Developement](#solo-developement)<!-- endToc -->
 
diff --git a/mob-sessions-retros/2024-09-15-retro.md b/mob-sessions-retros/2024-09-15-retro.md
index e275381..ffc50e0 100644
--- a/mob-sessions-retros/2024-09-15-retro.md
+++ b/mob-sessions-retros/2024-09-15-retro.md
@@ -18,4 +18,4 @@ What should we change next time?
  - Never launched mobtimer.
    - Startup checklist:
      - Run all the tests
-     - Start the mobtimer
\ No newline at end of file
+     - Start the mobtimer
diff --git a/tests/test_build.py b/tests/test_build.py
index 25748ad..a68da15 100644
--- a/tests/test_build.py
+++ b/tests/test_build.py
@@ -1,21 +1,21 @@
 import os
 import ast
 
+
 def test_no_imports_from_build_directory():
     # Make sure no file imports from build
-    root_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
+    root_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))
     for dirpath, dirnames, filenames in os.walk(root_dir):
         # Exclude directories that start with '.'
-        dirnames[:] = [d for d in dirnames if not d.startswith('.') and d != 'build']
+        dirnames[:] = [d for d in dirnames if not d.startswith(".") and d != "build"]
         # also exclude venv
-        dirnames[:] = [d for d in dirnames if not d.startswith('venv'
-                                                               )]
+        dirnames[:] = [d for d in dirnames if not d.startswith("venv")]
         for filename in filenames:
             # Skip files that start with '.' and non-Python files
-            if filename.startswith('.') or not filename.endswith('.py'):
+            if filename.startswith(".") or not filename.endswith(".py"):
                 continue
             file_path = os.path.join(dirpath, filename)
-            with open(file_path, 'r', encoding='utf-8') as file:
+            with open(file_path, "r", encoding="utf-8") as file:
                 source = file.read()
             try:
                 tree = ast.parse(source, filename=file_path)
@@ -24,8 +24,10 @@ def test_no_imports_from_build_directory():
             for node in ast.walk(tree):
                 if isinstance(node, ast.Import):
                     for alias in node.names:
-                        if alias.name == 'build' or alias.name.startswith('build.'):
+                        if alias.name == "build" or alias.name.startswith("build."):
                             assert False, f"{file_path} imports 'build'"
                 elif isinstance(node, ast.ImportFrom):
-                    if node.module == 'build' or (node.module and node.module.startswith('build.')):
+                    if node.module == "build" or (
+                        node.module and node.module.startswith("build.")
+                    ):
                         assert False, f"{file_path} imports from 'build'"