diff --git a/rootfs/agents/math_teacher/agent.toml b/rootfs/agents/math_teacher/agent.toml
index f7a29a5..646c8e4 100644
--- a/rootfs/agents/math_teacher/agent.toml
+++ b/rootfs/agents/math_teacher/agent.toml
@@ -1,6 +1,6 @@
 instance_id = "math_teacher"
 fullname = "the one"
-llm_model_name = "LLaMA2-70B"
+llm_model_name = "gpt-4-0613"
 [[prompt]]
 role = "system"
 content = "你是精通数学的老师"