diff --git a/ppml/tdx/docker/trusted-bigdl-llm/inference/requirements.txt b/ppml/tdx/docker/trusted-bigdl-llm/inference/requirements.txt
index c5b0249c583..dacb287523c 100644
--- a/ppml/tdx/docker/trusted-bigdl-llm/inference/requirements.txt
+++ b/ppml/tdx/docker/trusted-bigdl-llm/inference/requirements.txt
@@ -13,7 +13,6 @@ fastapi==0.109.1
 pydantic
 
 ### document qa
-langchain
 pypdf
 chromadb==0.3.25