diff --git a/corrscope/config.py b/corrscope/config.py
index 2b42f3c..3744e9d 100644
--- a/corrscope/config.py
+++ b/corrscope/config.py
@@ -56,7 +56,6 @@ class MyYAML(YAML):
     def dump(
         self, data: Any, stream: "Union[Path, TextIO, None]" = None, **kwargs
     ) -> Optional[str]:
-
         # On Windows, when dumping to path, ruamel.yaml writes files in locale encoding.
         # Foreign characters are undumpable. Locale-compatible characters cannot be loaded.
         # https://bitbucket.org/ruamel/yaml/issues/316/unicode-encoding-decoding-errors-on
@@ -154,6 +153,7 @@ T = TypeVar("T")
 #         yaml.dump(obj, stream)
 #         return yaml.load(stream)
 
+
 # AKA pickle_copy
 def copy_config(obj: T) -> T:
     with BytesIO() as stream:
diff --git a/corrscope/gui/view_mainwindow.py b/corrscope/gui/view_mainwindow.py
index 1019693..1c2be50 100644
--- a/corrscope/gui/view_mainwindow.py
+++ b/corrscope/gui/view_mainwindow.py
@@ -75,7 +75,6 @@ class MainWindow(QWidget):
 
             # Right-hand channel list
             with append_widget(s, QVBoxLayout) as self.audioColumn:
-
                 # Top bar (master audio, trigger)
                 self.add_top_bar(s)
 
@@ -96,7 +95,6 @@ class MainWindow(QWidget):
     def add_general_tab(self, s: LayoutStack) -> QWidget:
         tr = self.tr
         with self.add_tab_stretch(s, tr("&General"), layout=QVBoxLayout) as tab:
-
             # Global group
             with append_widget(s, QGroupBox) as self.optionGlobal:
                 set_layout(s, QFormLayout)
@@ -150,7 +148,6 @@ class MainWindow(QWidget):
         with add_tab(
             s, VerticalScrollArea, tr("&Appearance")
         ) as tab, fill_scroll_stretch(s, layout=QVBoxLayout):
-
             with append_widget(
                 s, QGroupBox, title=tr("Appearance"), layout=QFormLayout
             ):
@@ -420,7 +417,6 @@ class MainWindow(QWidget):
         tr = self.tr
         with append_widget(s, QHBoxLayout):
             with append_widget(s, QVBoxLayout):
-
                 with append_widget(s, QGroupBox):
                     s.widget.setTitle(tr("FFmpeg Options"))
                     set_layout(s, QFormLayout)
diff --git a/scripts.py b/scripts.py
index 17adf66..2991e9a 100644
--- a/scripts.py
+++ b/scripts.py
@@ -2,6 +2,7 @@
 import shlex
 import webbrowser
 
+
 # Obtain path from package.dist-info/entry_points.txt
 def run(path, arg_str):
     module, func = path.split(":")
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 4399add..83739fe 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -37,7 +37,6 @@ def call_main(argv):
 def yaml_sink(_mocker, command: str):
     """Mocks yaml.dump() and returns call args. Also tests dumping and loading."""
     with mock.patch.object(yaml, "dump") as dump:
-
         argv = shlex.split(command) + ["-w"]
         call_main(argv)