diff --git a/libs/langchain/langchain/chat_models/fireworks.py b/libs/langchain/langchain/chat_models/fireworks.py
index 22d9384d58..25f933f956 100644
--- a/libs/langchain/langchain/chat_models/fireworks.py
+++ b/libs/langchain/langchain/chat_models/fireworks.py
@@ -6,6 +6,7 @@ from typing import (
     Iterator,
     List,
     Optional,
+    Type,
     Union,
 )
 
@@ -36,7 +37,7 @@ from langchain.utils.env import get_from_dict_or_env
 
 
 def _convert_delta_to_message_chunk(
-    _dict: Any, default_class: type[BaseMessageChunk]
+    _dict: Any, default_class: Type[BaseMessageChunk]
 ) -> BaseMessageChunk:
     """Convert a delta response to a message chunk."""
     role = _dict.role
diff --git a/libs/langchain/langchain/chat_models/jinachat.py b/libs/langchain/langchain/chat_models/jinachat.py
index 51f5a0b60c..7b885d6482 100644
--- a/libs/langchain/langchain/chat_models/jinachat.py
+++ b/libs/langchain/langchain/chat_models/jinachat.py
@@ -12,6 +12,7 @@ from typing import (
     Mapping,
     Optional,
     Tuple,
+    Type,
     Union,
 )
 
@@ -91,7 +92,7 @@ async def acompletion_with_retry(llm: JinaChat, **kwargs: Any) -> Any:
 
 
 def _convert_delta_to_message_chunk(
-    _dict: Mapping[str, Any], default_class: type[BaseMessageChunk]
+    _dict: Mapping[str, Any], default_class: Type[BaseMessageChunk]
 ) -> BaseMessageChunk:
     role = _dict.get("role")
     content = _dict.get("content") or ""
diff --git a/libs/langchain/langchain/chat_models/litellm.py b/libs/langchain/langchain/chat_models/litellm.py
index f568cf2760..275b8cba79 100644
--- a/libs/langchain/langchain/chat_models/litellm.py
+++ b/libs/langchain/langchain/chat_models/litellm.py
@@ -12,6 +12,7 @@ from typing import (
     Mapping,
     Optional,
     Tuple,
+    Type,
     Union,
 )
 
@@ -144,7 +145,7 @@ async def acompletion_with_retry(
 
 
 def _convert_delta_to_message_chunk(
-    _dict: Mapping[str, Any], default_class: type[BaseMessageChunk]
+    _dict: Mapping[str, Any], default_class: Type[BaseMessageChunk]
 ) -> BaseMessageChunk:
     role = _dict.get("role")
     content = _dict.get("content") or ""
diff --git a/libs/langchain/langchain/chat_models/openai.py b/libs/langchain/langchain/chat_models/openai.py
index 333c7fe37c..f22b55a103 100644
--- a/libs/langchain/langchain/chat_models/openai.py
+++ b/libs/langchain/langchain/chat_models/openai.py
@@ -14,6 +14,7 @@ from typing import (
     Mapping,
     Optional,
     Tuple,
+    Type,
     Union,
 )
 
@@ -97,7 +98,7 @@ async def acompletion_with_retry(
 
 
 def _convert_delta_to_message_chunk(
-    _dict: Mapping[str, Any], default_class: type[BaseMessageChunk]
+    _dict: Mapping[str, Any], default_class: Type[BaseMessageChunk]
 ) -> BaseMessageChunk:
     role = _dict.get("role")
     content = _dict.get("content") or ""