diff --git a/libs/core/langchain_core/indexing/base.py b/libs/core/langchain_core/indexing/base.py
index 6d616f10f0e..70c10e10209 100644
--- a/libs/core/langchain_core/indexing/base.py
+++ b/libs/core/langchain_core/indexing/base.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import abc
+import time
 from abc import ABC, abstractmethod
 from typing import (
     Any,
@@ -10,7 +11,6 @@ from typing import (
     Sequence,
 )
 
-import time
 from typing_extensions import TypedDict
 
 from langchain_core._api import beta
diff --git a/libs/core/langchain_core/indexing/in_memory.py b/libs/core/langchain_core/indexing/in_memory.py
index 46a50d02e50..757535948e0 100644
--- a/libs/core/langchain_core/indexing/in_memory.py
+++ b/libs/core/langchain_core/indexing/in_memory.py
@@ -1,9 +1,9 @@
 import uuid
-from typing import Dict, Optional, Sequence, Any, List
+from typing import Any, Dict, List, Optional, Sequence
 
 from langchain_core.documents import Document
 from langchain_core.indexing import UpsertResponse
-from langchain_core.indexing.base import DocumentIndexer, DeleteResponse
+from langchain_core.indexing.base import DeleteResponse, DocumentIndexer
 
 
 class InMemoryIndexer(DocumentIndexer):
diff --git a/libs/core/tests/unit_tests/indexing/test_in_memory_indexer.py b/libs/core/tests/unit_tests/indexing/test_in_memory_indexer.py
index d15a1767c1d..8068f108207 100644
--- a/libs/core/tests/unit_tests/indexing/test_in_memory_indexer.py
+++ b/libs/core/tests/unit_tests/indexing/test_in_memory_indexer.py
@@ -3,13 +3,13 @@
 from typing import Generator
 
 import pytest
-
-from langchain_core.indexing import DocumentIndexer
-from langchain_core.indexing.in_memory import InMemoryIndexer
 from langchain_standard_tests.integration_tests.indexer import (
     BaseDocumentIndexerTestSuite,
 )
 
+from langchain_core.indexing import DocumentIndexer
+from langchain_core.indexing.in_memory import InMemoryIndexer
+
 
 class TestDocumentIndexerTestSuite(BaseDocumentIndexerTestSuite):
     @pytest.fixture()