diff --git a/libs/partners/mistralai/langchain_mistralai/chat_models.py b/libs/partners/mistralai/langchain_mistralai/chat_models.py
index b3a43629e8aae..7664e7a45cc2f 100644
--- a/libs/partners/mistralai/langchain_mistralai/chat_models.py
+++ b/libs/partners/mistralai/langchain_mistralai/chat_models.py
@@ -353,6 +353,7 @@ def _convert_message_to_mistral_chat_message(
             "role": "tool",
             "content": message.content,
             "name": message.name,
+            "tool_call_id": message.tool_call_id,
         }
     else:
         raise ValueError(f"Got unknown type {message}")