diff --git a/charts/mastodon/Chart.yaml b/charts/mastodon/Chart.yaml
index f71e69b70b1f74cbf6e00817f217d9fb841da392..ac563515fcb39a14b7cf9fb1cbae8a50be8db485 100644
--- a/charts/mastodon/Chart.yaml
+++ b/charts/mastodon/Chart.yaml
@@ -17,10 +17,10 @@ annotations:
     - name: support
       url: https://matrix.to/#/#mastodon-on-kubernetes:shivering-isles.com
 type: application
-version: 9.0.0
+version: 9.0.1
 kubeVersion: ">= 1.23"
 # renovate: image=ghcr.io/mastodon/mastodon
-appVersion: "v4.2.1"
+appVersion: "v4.2.3"
 
 dependencies:
   - name: postgresql
diff --git a/charts/mastodon/README.md b/charts/mastodon/README.md
index 3b1c687372506dcb1e2acb77e4d5ee96e9f0f635..f29ffbe2269a7df16d0ac5b2a019536957eb5344 100644
--- a/charts/mastodon/README.md
+++ b/charts/mastodon/README.md
@@ -1,6 +1,6 @@
 # mastodon
 
-![Version: 9.0.0](https://img.shields.io/badge/Version-9.0.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: v4.2.1](https://img.shields.io/badge/AppVersion-v4.2.1-informational?style=flat-square)
+![Version: 9.0.1](https://img.shields.io/badge/Version-9.0.1-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: v4.2.3](https://img.shields.io/badge/AppVersion-v4.2.3-informational?style=flat-square)
 
 Mastodon is a free, open-source social network server based on ActivityPub.
 
@@ -19,7 +19,7 @@ Kubernetes: `>= 1.23`
 
 | Repository | Name | Version |
 |------------|------|---------|
-| https://raw.githubusercontent.com/bitnami/charts/archive-full-index/bitnami | postgresql | 13.2.20 |
+| https://raw.githubusercontent.com/bitnami/charts/archive-full-index/bitnami | postgresql | 13.2.21 |
 | https://raw.githubusercontent.com/bitnami/charts/archive-full-index/bitnami | redis | 18.4.0 |
 
 ## Values