diff --git a/python/pycrdt/_array.py b/python/pycrdt/_array.py
index 9fd58eb..b746905 100644
--- a/python/pycrdt/_array.py
+++ b/python/pycrdt/_array.py
@@ -15,6 +15,7 @@ class Array(BaseType):
     """
     A collection used to store data in an indexed sequence structure, similar to a Python `list`.
     """
+
     _prelim: list | None
     _integrated: _Array | None
 
@@ -371,6 +372,7 @@ class ArrayEvent(BaseEvent):
         delta (list[dict[str, Any]]): A list of items describing the changes.
         path (list[int | str]): A list with the indices pointing to the array that was changed.
     """
+
     __slots__ = "target", "delta", "path"
 
 
diff --git a/python/pycrdt/_map.py b/python/pycrdt/_map.py
index 5f7e5dc..d1fe560 100644
--- a/python/pycrdt/_map.py
+++ b/python/pycrdt/_map.py
@@ -15,6 +15,7 @@ class Map(BaseType):
     """
     A collection used to store key-value entries in an unordered manner, similar to a Python `dict`.
     """
+
     _prelim: dict | None
     _integrated: _Map | None
 
@@ -298,6 +299,7 @@ class MapEvent(BaseEvent):
         delta (list[dict[str, Any]]): A list of items describing the changes.
         path (list[int | str]): A list with the indices pointing to the map that was changed.
     """
+
     __slots__ = "target", "keys", "path"
 
 
diff --git a/python/pycrdt/_sync.py b/python/pycrdt/_sync.py
index c5fc925..dc4d3f6 100644
--- a/python/pycrdt/_sync.py
+++ b/python/pycrdt/_sync.py
@@ -14,6 +14,7 @@ class YMessageType(IntEnum):
         SYNC: A message type used for synchronizing documents.
         AWARENESS: A message type used for the awareness protocol.
     """
+
     SYNC: int = 0
     AWARENESS: int = 1
 
@@ -28,6 +29,7 @@ class YSyncMessageType(IntEnum):
             consisting of all missing updates and all deletions.
         SYNC_UPDATE: A synchronization message type used to send document updates.
     """
+
     SYNC_STEP1: int = 0
     SYNC_STEP2: int = 1
     SYNC_UPDATE: int = 2
@@ -111,6 +113,7 @@ class Decoder:
     """
     A decoder capable of reading messages from a byte stream.
     """
+
     def __init__(self, stream: bytes):
         """
         Args:
diff --git a/python/pycrdt/_text.py b/python/pycrdt/_text.py
index fd0aebf..784ab51 100644
--- a/python/pycrdt/_text.py
+++ b/python/pycrdt/_text.py
@@ -15,6 +15,7 @@ class Text(BaseType):
     """
     A shared data type used for collaborative text editing, similar to a Python `str`.
     """
+
     _prelim: str | None
     _integrated: _Text | None
 
@@ -264,6 +265,7 @@ class TextEvent(BaseEvent):
         delta (list[dict[str, Any]]): A list of items describing the changes.
         path (list[int | str]): A list with the indices pointing to the text that was changed.
     """
+
     __slots__ = "target", "delta", "path"
 
 
diff --git a/python/pycrdt/_transaction.py b/python/pycrdt/_transaction.py
index f8062c2..a73648f 100644
--- a/python/pycrdt/_transaction.py
+++ b/python/pycrdt/_transaction.py
@@ -21,6 +21,7 @@ class Transaction:
         ...
     ```
     """
+
     _doc: Doc
     _txn: _Transaction | None
     _leases: int
@@ -87,7 +88,7 @@ def __exit__(
     def origin(self) -> Any:
         """
         The origin of the transaction.
-        
+
         Raises:
             RuntimeError: No current transaction.
         """
@@ -114,6 +115,7 @@ class NewTransaction(Transaction):
         ...
     ```
     """
+
     async def __aenter__(self) -> Transaction:
         if self._doc._allow_multithreading:
             if not await to_thread.run_sync(
diff --git a/python/pycrdt/_undo.py b/python/pycrdt/_undo.py
index 5c2eb16..0c59e38 100644
--- a/python/pycrdt/_undo.py
+++ b/python/pycrdt/_undo.py
@@ -24,6 +24,7 @@ class UndoManager:
     Changes can be undone/redone by batches using time intervals.
     It is possible to include/exclude changes by transaction origin in undo/redo operations.
     """
+
     def __init__(
         self,
         *,
@@ -37,7 +38,7 @@ def __init__(
             scopes: A list of shared types the undo manager will work with.
             capture_timeout_millis: A time interval for grouping changes that will be undone/redone.
 
-        
+
         Raises:
             RuntimeError: UndoManager must be created with doc or scopes.
         """
diff --git a/python/pycrdt/_update.py b/python/pycrdt/_update.py
index b82deda..e5068ea 100644
--- a/python/pycrdt/_update.py
+++ b/python/pycrdt/_update.py
@@ -34,7 +34,7 @@ def get_update(update: bytes, state: bytes) -> bytes:
 def merge_updates(*updates: bytes) -> bytes:
     """
     Returns an update consisting of a combination of all given updates.
-    
+
     Args:
         updates: The updates to merge.