diff --git a/packages/aws-cdk-lib/aws-s3-deployment/README.md b/packages/aws-cdk-lib/aws-s3-deployment/README.md
index 9bc53cff46280..bf74e108d345f 100644
--- a/packages/aws-cdk-lib/aws-s3-deployment/README.md
+++ b/packages/aws-cdk-lib/aws-s3-deployment/README.md
@@ -489,8 +489,9 @@ new cdk.CfnOutput(this, 'ObjectKey', {
 ## Development
 
 The custom resource is implemented in Python 3.9 in order to be able to leverage
-the AWS CLI for "aws s3 sync". The code is under [`lib/lambda`](https://github.com/aws/aws-cdk/tree/main/packages/aws-cdk-lib/aws-s3-deployment/lib/lambda) and
-unit tests are under [`test/lambda`](https://github.com/aws/aws-cdk/tree/main/packages/aws-cdk-lib/aws-s3-deployment/test/lambda).
+the AWS CLI for "aws s3 sync".
+The code is now in the `@aws-cdk/custom-resource-handlers` package under [`lib/aws-s3-deployment/bucket-deployment-handler`](https://github.com/aws/aws-cdk/tree/main/packages/@aws-cdk/custom-resource-handlers/lib/aws-s3-deployment/bucket-deployment-handler/) and
+unit tests are under [`test/aws-s3-deployment/bucket-deployment-handler`](https://github.com/aws/aws-cdk/tree/main/packages/@aws-cdk/custom-resource-handlers/test/aws-s3-deployment/bucket-deployment-handler/).
 
 This package requires Python 3.9 during build time in order to create the custom
 resource Lambda bundle and test it. It also relies on a few bash scripts, so