diff --git a/openhands/agenthub/planner_agent/prompt.py b/openhands/agenthub/planner_agent/prompt.py
index d69b196172f2..30d50e3c856d 100644
--- a/openhands/agenthub/planner_agent/prompt.py
+++ b/openhands/agenthub/planner_agent/prompt.py
@@ -1,7 +1,7 @@
 from openhands.controller.state.state import State
 from openhands.core.logger import openhands_logger as logger
 from openhands.core.schema import ActionType
-from openhands.core.utils import json
+from openhands.io import json
 from openhands.events.action import (
     Action,
     NullAction,
diff --git a/openhands/agenthub/planner_agent/response_parser.py b/openhands/agenthub/planner_agent/response_parser.py
index 12068cd5b769..fb6721f248a5 100644
--- a/openhands/agenthub/planner_agent/response_parser.py
+++ b/openhands/agenthub/planner_agent/response_parser.py
@@ -1,5 +1,5 @@
 from openhands.controller.action_parser import ResponseParser
-from openhands.core.utils import json
+from openhands.io import json
 from openhands.events.action import (
     Action,
 )
diff --git a/openhands/condenser/prompts.py b/openhands/condenser/prompts.py
index 644e3f8d78b5..0c0fe63e051e 100644
--- a/openhands/condenser/prompts.py
+++ b/openhands/condenser/prompts.py
@@ -6,10 +6,10 @@
     LLMResponseError,
 )
 from openhands.core.logger import openhands_logger as logger
-from openhands.core.utils import json
 from openhands.events.action.agent import AgentSummarizeAction
 from openhands.events.event import EventSource
 from openhands.events.serialization.action import action_from_dict
+from openhands.io import json
 
 WORD_LIMIT = 200
 MESSAGE_SUMMARY_WARNING_FRAC = 0.75
diff --git a/openhands/events/stream.py b/openhands/events/stream.py
index 4a4b212f3270..be9bacec6aa8 100644
--- a/openhands/events/stream.py
+++ b/openhands/events/stream.py
@@ -9,7 +9,6 @@
 from typing import Callable, Iterable
 
 from openhands.core.logger import openhands_logger as logger
-from openhands.core.utils import json
 from openhands.events.action.action import Action
 from openhands.events.event import Event, EventSource
 from openhands.events.serialization.event import event_from_dict, event_to_dict