diff --git a/packages/lang/package.json b/packages/lang/package.json
index a038eed..350cac0 100644
--- a/packages/lang/package.json
+++ b/packages/lang/package.json
@@ -16,7 +16,7 @@
     "@langchain/openai": "^0.0.28",
     "easydl": "^1.1.1",
     "hnswlib-node": "^3",
-    "langchain": "^0.1.34",
+    "langchain": "^0.2.0",
     "ollama": "^0.5.0",
     "xml-js": "^1.6.11",
     "znv": "^0.4.0",