diff --git a/agenthub/codeact_agent/codeact_agent.py b/agenthub/codeact_agent/codeact_agent.py
index 8179e070ff..5127b9fe5a 100644
--- a/agenthub/codeact_agent/codeact_agent.py
+++ b/agenthub/codeact_agent/codeact_agent.py
@@ -1,5 +1,5 @@
 import re
-from typing import List, Mapping
+from typing import Mapping
 
 from agenthub.codeact_agent.prompt import EXAMPLES, SYSTEM_MESSAGE
 from opendevin.controller.agent import Agent
@@ -117,7 +117,7 @@ class CodeActAgent(Agent):
 
     """
 
-    sandbox_plugins: List[PluginRequirement] = [
+    sandbox_plugins: list[PluginRequirement] = [
         JupyterRequirement(),
         SWEAgentCommandsRequirement(),
     ]
@@ -144,7 +144,7 @@ class CodeActAgent(Agent):
         - llm (LLM): The llm to be used by this agent
         """
         super().__init__(llm)
-        self.messages: List[Mapping[str, str]] = []
+        self.messages: list[Mapping[str, str]] = []
         self.cost_accumulator = 0
 
     def step(self, state: State) -> Action:
@@ -263,5 +263,5 @@ class CodeActAgent(Agent):
             # it want to talk to the user
             return MessageAction(content=action_str, wait_for_response=True)
 
-    def search_memory(self, query: str) -> List[str]:
+    def search_memory(self, query: str) -> list[str]:
         raise NotImplementedError('Implement this abstract method')
diff --git a/opendevin/server/session/msg_stack.py b/opendevin/server/session/msg_stack.py
index 86025f50de..c328073c72 100644
--- a/opendevin/server/session/msg_stack.py
+++ b/opendevin/server/session/msg_stack.py
@@ -2,7 +2,7 @@ import atexit
 import json
 import os
 import uuid
-from typing import Dict, List
+from typing import Dict
 
 from opendevin.core.logger import opendevin_logger as logger
 from opendevin.core.schema.action import ActionType
@@ -31,7 +31,7 @@ class Message:
 
 
 class MessageStack:
-    _messages: Dict[str, List[Message]] = {}
+    _messages: Dict[str, list[Message]] = {}
 
     def __init__(self):
         self._load_messages()
@@ -51,7 +51,7 @@ class MessageStack:
             return
         del self._messages[sid]
 
-    def get_messages(self, sid: str) -> List[Dict[str, object]]:
+    def get_messages(self, sid: str) -> list[Dict[str, object]]:
         if sid not in self._messages:
             return []
         return [msg.to_dict() for msg in self._messages[sid]]