diff --git a/lambda/aws-summarization-appsync-stepfn/summary_generator/requirements.txt b/lambda/aws-summarization-appsync-stepfn/summary_generator/requirements.txt
index dd4ecdc1..cdcd591e 100644
--- a/lambda/aws-summarization-appsync-stepfn/summary_generator/requirements.txt
+++ b/lambda/aws-summarization-appsync-stepfn/summary_generator/requirements.txt
@@ -3,7 +3,7 @@ boto3>=1.28.61
 botocore>=1.31.61
 requests==2.31.0
 requests-aws4auth==1.2.3
-langchain==0.0.312
+langchain==0.0.317
 nltk==3.8.1
 urllib3<2
 aws-lambda-powertools