diff --git a/letta/server/rest_api/utils.py b/letta/server/rest_api/utils.py
index c39af577..c5cb6696 100644
--- a/letta/server/rest_api/utils.py
+++ b/letta/server/rest_api/utils.py
@@ -333,6 +333,7 @@ def create_letta_messages_from_llm_response(
             batch_item_id=llm_batch_item_id,
             tool_returns=[
                 ToolReturn(
+                    tool_call_id=tool_call_id,
                     status=tool_execution_result.status,
                     stderr=tool_execution_result.stderr,
                     stdout=tool_execution_result.stdout,