diff --git a/libs/community/langchain_community/chat_models/gpt_router.py b/libs/community/langchain_community/chat_models/gpt_router.py
index 1e53f41a3d7c4..ac91200ed4e3e 100644
--- a/libs/community/langchain_community/chat_models/gpt_router.py
+++ b/libs/community/langchain_community/chat_models/gpt_router.py
@@ -233,8 +233,8 @@ def _generate(
         self,
         messages: List[BaseMessage],
         stop: Optional[List[str]] = None,
-        run_manager: CallbackManagerForLLMRun | None = None,
-        stream: bool | None = None,
+        run_manager: Optional[CallbackManagerForLLMRun] = None,
+        stream: Optional[bool] = None,
         **kwargs: Any,
     ) -> ChatResult:
         should_stream = stream if stream is not None else self.streaming
@@ -259,8 +259,8 @@ async def _agenerate(
         self,
         messages: List[BaseMessage],
         stop: Optional[List[str]] = None,
-        run_manager: AsyncCallbackManagerForLLMRun | None = None,
-        stream: bool | None = None,
+        run_manager: Optional[AsyncCallbackManagerForLLMRun] = None,
+        stream: Optional[bool] = None,
         **kwargs: Any,
     ) -> ChatResult:
         should_stream = stream if stream is not None else self.streaming
diff --git a/libs/community/langchain_community/tools/e2b_data_analysis/tool.py b/libs/community/langchain_community/tools/e2b_data_analysis/tool.py
index 0794b87469ef9..242b305e1bc51 100644
--- a/libs/community/langchain_community/tools/e2b_data_analysis/tool.py
+++ b/libs/community/langchain_community/tools/e2b_data_analysis/tool.py
@@ -5,7 +5,7 @@
 import os
 from io import StringIO
 from sys import version_info
-from typing import IO, TYPE_CHECKING, Any, Callable, List, Optional, Type
+from typing import IO, TYPE_CHECKING, Any, Callable, List, Optional, Type, Union
 
 from langchain_core.callbacks import (
     AsyncCallbackManagerForToolRun,
@@ -197,11 +197,11 @@ def run_command(
             "exit_code": output.exit_code,
         }
 
-    def install_python_packages(self, package_names: str | List[str]) -> None:
+    def install_python_packages(self, package_names: Union[str, List[str]]) -> None:
         """Install python packages in the sandbox."""
         self.session.install_python_packages(package_names)
 
-    def install_system_packages(self, package_names: str | List[str]) -> None:
+    def install_system_packages(self, package_names: Union[str, List[str]]) -> None:
         """Install system packages (via apt) in the sandbox."""
         self.session.install_system_packages(package_names)
 
diff --git a/libs/core/langchain_core/output_parsers/base.py b/libs/core/langchain_core/output_parsers/base.py
index 4f8588b205862..c5c2e379e8c65 100644
--- a/libs/core/langchain_core/output_parsers/base.py
+++ b/libs/core/langchain_core/output_parsers/base.py
@@ -96,7 +96,7 @@ def invoke(
 
     async def ainvoke(
         self,
-        input: str | BaseMessage,
+        input: Union[str, BaseMessage],
         config: Optional[RunnableConfig] = None,
         **kwargs: Optional[Any],
     ) -> T:
@@ -185,7 +185,7 @@ def invoke(
 
     async def ainvoke(
         self,
-        input: str | BaseMessage,
+        input: Union[str, BaseMessage],
         config: Optional[RunnableConfig] = None,
         **kwargs: Optional[Any],
     ) -> T:
diff --git a/libs/core/langchain_core/tracers/base.py b/libs/core/langchain_core/tracers/base.py
index a963fa02b3111..9d36e8d45bd47 100644
--- a/libs/core/langchain_core/tracers/base.py
+++ b/libs/core/langchain_core/tracers/base.py
@@ -118,7 +118,7 @@ def _get_execution_order(self, parent_run_id: Optional[str] = None) -> int:
 
         return parent_run.child_execution_order + 1
 
-    def _get_run(self, run_id: UUID, run_type: str | None = None) -> Run:
+    def _get_run(self, run_id: UUID, run_type: Optional[str] = None) -> Run:
         try:
             run = self.run_map[str(run_id)]
         except KeyError as exc: