diff --git a/alfort_dom/dom.py b/alfort_dom/dom.py
index 46abc18..4862ae6 100644
--- a/alfort_dom/dom.py
+++ b/alfort_dom/dom.py
@@ -9,16 +9,13 @@
 
 
 class HTMLElement(Protocol):
-    def focus(self) -> None:
-        ...
+    def focus(self) -> None: ...
 
     @property
-    def nodeValue(self) -> str:
-        ...
+    def nodeValue(self) -> str: ...
 
     @nodeValue.setter
-    def nodeValue(self, text: str) -> None:
-        ...
+    def nodeValue(self, text: str) -> None: ...
 
 
 def dom_effect(
diff --git a/docs/examples/todomvc/main.py b/docs/examples/todomvc/main.py
index ed76367..be2e139 100755
--- a/docs/examples/todomvc/main.py
+++ b/docs/examples/todomvc/main.py
@@ -96,8 +96,7 @@ class UpdateEntry:
 
 
 @dataclass(frozen=True)
-class Add:
-    ...
+class Add: ...
 
 
 @dataclass(frozen=True)
@@ -106,8 +105,7 @@ class Delete:
 
 
 @dataclass(frozen=True)
-class DeleteComplete:
-    ...
+class DeleteComplete: ...
 
 
 @dataclass(frozen=True)
diff --git a/stubs/pyodide/__init__.pyi b/stubs/pyodide/__init__.pyi
index 6ad32a8..ff40492 100755
--- a/stubs/pyodide/__init__.pyi
+++ b/stubs/pyodide/__init__.pyi
@@ -12,11 +12,17 @@ class JsProxy(Any):
         self,
         *,
         depth: int = ...,
-        default_converter: Callable[
-            ["JsProxy", Callable[["JsProxy"], Any], Callable[["JsProxy", Any], None]],
-            Any,
-        ]
-        | None = ...,
+        default_converter: (
+            Callable[
+                [
+                    "JsProxy",
+                    Callable[["JsProxy"], Any],
+                    Callable[["JsProxy", Any], None],
+                ],
+                Any,
+            ]
+            | None
+        ) = ...,
     ) -> Any: ...
     def then(
         self, onfulfilled: Callable[[Any], Any], onrejected: Callable[[Any], Any]
@@ -41,10 +47,12 @@ def to_js(
     pyproxies: JsProxy | None = ...,
     create_pyproxies: bool = ...,
     dict_converter: Callable[[Iterable[JsProxy]], JsProxy] | None = ...,
-    default_converter: Callable[
-        [Any, Callable[[Any], JsProxy], Callable[[Any, JsProxy], None]], JsProxy
-    ]
-    | None = ...,
+    default_converter: (
+        Callable[
+            [Any, Callable[[Any], JsProxy], Callable[[Any, JsProxy], None]], JsProxy
+        ]
+        | None
+    ) = ...,
 ) -> JsProxy: ...
 
 class Promise(JsProxy): ...