diff --git a/libs/langgraph/langgraph/graph/state.py b/libs/langgraph/langgraph/graph/state.py
index a66062717..9573e63ae 100644
--- a/libs/langgraph/langgraph/graph/state.py
+++ b/libs/langgraph/langgraph/graph/state.py
@@ -47,9 +47,9 @@ from langgraph._internal._fields import (
 from langgraph._internal._pydantic import create_model
 from langgraph._internal._runnable import coerce_to_runnable
 from langgraph._internal._typing import EMPTY_SEQ, MISSING, DeprecatedKwargs
+from langgraph.channels._delta import DeltaChannel
 from langgraph.channels.base import BaseChannel
 from langgraph.channels.binop import BinaryOperatorAggregate, _strip_extras
-from langgraph.channels._delta import DeltaChannel
 from langgraph.channels.ephemeral_value import EphemeralValue
 from langgraph.channels.last_value import LastValue, LastValueAfterFinish
 from langgraph.channels.named_barrier_value import (
diff --git a/libs/langgraph/langgraph/pregel/_checkpoint.py b/libs/langgraph/langgraph/pregel/_checkpoint.py
index 3437692be..51350071d 100644
--- a/libs/langgraph/langgraph/pregel/_checkpoint.py
+++ b/libs/langgraph/langgraph/pregel/_checkpoint.py
@@ -8,8 +8,8 @@ from langgraph.checkpoint.base import DELTA_SENTINEL, BaseCheckpointSaver, Check
 from langgraph.checkpoint.base.id import uuid6
 
 from langgraph._internal._typing import MISSING
-from langgraph.channels.base import BaseChannel
 from langgraph.channels._delta import DeltaChannel
+from langgraph.channels.base import BaseChannel
 from langgraph.managed.base import ManagedValueMapping, ManagedValueSpec
 
 LATEST_VERSION = 4
diff --git a/libs/langgraph/tests/test_channels.py b/libs/langgraph/tests/test_channels.py
index 2b858b6a0..1aed2333f 100644
--- a/libs/langgraph/tests/test_channels.py
+++ b/libs/langgraph/tests/test_channels.py
@@ -6,8 +6,8 @@ from langchain_core.messages import AIMessage, HumanMessage
 from langgraph.checkpoint.base import DELTA_SENTINEL
 
 from langgraph._internal._typing import MISSING
-from langgraph.channels.binop import BinaryOperatorAggregate
 from langgraph.channels._delta import DeltaChannel
+from langgraph.channels.binop import BinaryOperatorAggregate
 from langgraph.channels.last_value import LastValue
 from langgraph.channels.topic import Topic
 from langgraph.channels.untracked_value import UntrackedValue
diff --git a/libs/langgraph/tests/test_delta_channel_migration.py b/libs/langgraph/tests/test_delta_channel_migration.py
index bdaa1e6ea..fb107395a 100644
--- a/libs/langgraph/tests/test_delta_channel_migration.py
+++ b/libs/langgraph/tests/test_delta_channel_migration.py
@@ -49,8 +49,8 @@ import pytest
 from langgraph.checkpoint.memory import InMemorySaver
 from typing_extensions import TypedDict
 
-from langgraph.channels.binop import BinaryOperatorAggregate
 from langgraph.channels._delta import DeltaChannel
+from langgraph.channels.binop import BinaryOperatorAggregate
 from langgraph.graph import END, START, StateGraph
 
 pytestmark = pytest.mark.anyio