diff --git a/aqt/installer.py b/aqt/installer.py
index 1de0acc..034aa08 100644
--- a/aqt/installer.py
+++ b/aqt/installer.py
@@ -638,7 +638,9 @@ class Cli:
         self._set_common_argument(src_parser)
         self._set_common_options(src_parser)
         self._set_module_options(src_parser)
-        src_parser.add_argument("--kde", action="store_true", help="patching with KDE patch kit.")
+        src_parser.add_argument(
+            "--kde", action="store_true", help="patching with KDE patch kit."
+        )
         #
         tools_parser = subparsers.add_parser("tool")
         tools_parser.set_defaults(func=self.run_tool)
diff --git a/aqt/updater.py b/aqt/updater.py
index 3d1fd40..e0296e9 100644
--- a/aqt/updater.py
+++ b/aqt/updater.py
@@ -298,7 +298,9 @@ class Updater:
     @classmethod
     def patch_kde(cls, src_dir):
         logger = logging.getLogger("aqt")
-        PATCH_URL_BASE = "https://raw.githubusercontent.com/miurahr/kde-qt-patch/main/patches/"
+        PATCH_URL_BASE = (
+            "https://raw.githubusercontent.com/miurahr/kde-qt-patch/main/patches/"
+        )
         for p in Settings.kde_patches:
             logger.info("Apply patch: " + p)
             patchfile = patch.fromurl(PATCH_URL_BASE + p)