diff --git a/cdk/opensearch-website-search/lambdas/indexer-lambda/requirements.txt b/cdk/opensearch-website-search/lambdas/indexer-lambda/requirements.txt
index 418da19..bc5001e 100644
--- a/cdk/opensearch-website-search/lambdas/indexer-lambda/requirements.txt
+++ b/cdk/opensearch-website-search/lambdas/indexer-lambda/requirements.txt
@@ -10,4 +10,4 @@ python-dateutil==2.8.2
 requests==2.31.0
 s3transfer==0.5.0
 six==1.16.0
-urllib3==1.26.7
+urllib3==1.26.18