diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1f07c5d..9af1606 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [0.2.4] - 2023-06-10
+- Matrix builds for Ruby v3.0 onwards only
+- Remove support for Ruby v2.x
+
 ## [0.2.3] - 2021-07-03
 ### Added
 - Support for Ruby v3
diff --git a/README.md b/README.md
index c689a32..bae275f 100644
--- a/README.md
+++ b/README.md
@@ -117,7 +117,7 @@ aws-security-viz only uses the `ec2:DescribeSecurityGroups` api so a minimal IAM
 
 Alternatively you can use [aws-vault](https://github.com/99designs/aws-vault/) and run it using short lived temporary credentials.
 
-`$ aws-vault exec <profile> -- aws_security_viz -f aws.json --renderer navigator`
+`$ aws-vault exec <profile> -- aws_security_viz -f aws.json --renderer navigator --serve 9091`
 
 #### Advanced configuration