diff --git a/lambda/aws-qa-appsync-opensearch/question_answering/src/requirements.txt b/lambda/aws-qa-appsync-opensearch/question_answering/src/requirements.txt
index 44528d2..ae133e8 100644
--- a/lambda/aws-qa-appsync-opensearch/question_answering/src/requirements.txt
+++ b/lambda/aws-qa-appsync-opensearch/question_answering/src/requirements.txt
@@ -9,5 +9,5 @@ requests==2.31.0
 requests-aws4auth==1.2.3
 opensearch-py==2.3.1
 numpy
-langchain==0.0.329
+langchain==0.3.7
 opensearch-py
\ No newline at end of file