diff --git a/End_to_end_Solutions/AOAISearchDemo/app/requirements.txt b/End_to_end_Solutions/AOAISearchDemo/app/requirements.txt
index 3a5ebf33..9acc1997 100644
--- a/End_to_end_Solutions/AOAISearchDemo/app/requirements.txt
+++ b/End_to_end_Solutions/AOAISearchDemo/app/requirements.txt
@@ -6,7 +6,7 @@ azure-keyvault-secrets==4.7.0
 azure-search-documents==11.4.0b6
 azure-storage-blob==12.14.1
 Flask==2.2.2
-langchain==0.0.139
+langchain==0.2.10
 openai==0.27.4
 opencensus==0.11.2
 opencensus-ext-azure==1.1.9