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 c0807b9..7489c3a 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==2.32.0
 requests-aws4auth==1.2.3
 opensearch-py==2.4.2
 numpy
-langchain==0.2.5
+langchain==0.3.8
 langchain-community==0.2.5
\ No newline at end of file