diff --git a/pyproject.toml b/pyproject.toml
index d992b0f9..2e75ccb4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,7 +42,7 @@ dependencies = [
 
 [project.optional-dependencies]
 core = [
-    "agentscope>=2.0.2",
+    "agentscope==2.0.3",
     "claude-agent-sdk>=0.2.91",
     "faiss-cpu>=1.13.2",
     "jieba>=0.42.1",