diff --git a/docs/docs/how-tos/update-state-from-tools.ipynb b/docs/docs/how-tos/update-state-from-tools.ipynb
index 41147688e..6e916ca2a 100644
--- a/docs/docs/how-tos/update-state-from-tools.ipynb
+++ b/docs/docs/how-tos/update-state-from-tools.ipynb
@@ -31,7 +31,7 @@
     "            # update the state keys\n",
     "            \"user_info\": user_info,\n",
     "            # update the message history\n",
-    "            \"messages\": [ToolMessage(\"Successfully looked up user information\", tool_call_id=\"\")]\n",
+    "            \"messages\": [ToolMessage(\"Successfully looked up user information\", tool_call_id=tool_call_id)]\n",
     "        }\n",
     "    )\n",
     "```\n",