diff --git a/charts/postgres/Chart.yaml b/charts/postgres/Chart.yaml
index 5e1ec0973d50ee59a66f052dff2d77311792998a..86a932df3ba18d6f6138040b066ccffb721fb7bb 100644
--- a/charts/postgres/Chart.yaml
+++ b/charts/postgres/Chart.yaml
@@ -7,6 +7,6 @@ type: application
 maintainers:
   - name: groundhog2k
 
-version: 0.2.22
+version: 0.4.0
 
-appVersion: "13.8"
+appVersion: "15.0"
diff --git a/charts/postgres/README.md b/charts/postgres/README.md
index 5033fd93a52dfd0d2de1fc5bfa694a58230ef7f2..8de57161a859a03bf0c0c2b02d2009f67ea13f18 100644
--- a/charts/postgres/README.md
+++ b/charts/postgres/README.md
@@ -1,6 +1,6 @@
 # PostgreSQL
 
-![Version: 0.3.13](https://img.shields.io/badge/Version-0.3.13-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 14.5](https://img.shields.io/badge/AppVersion-14.5-informational?style=flat-square)
+![Version: 0.4.0](https://img.shields.io/badge/Version-0.4.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 15.0](https://img.shields.io/badge/AppVersion-15.0-informational?style=flat-square)
 
 ## Changelog
 
@@ -10,7 +10,7 @@ A Helm chart for PostgreSQL on Kubernetes
 
 ## ⚠️ Warning
 
-There is no automatic database upgrade from PostgreSQL 13.x (Chart version 0.2.x) to PostgreSQL 14.x (Chart version 0.3.x) and deployment will fail when database is PostgreSQL 13.x.
+There is no automatic database upgrade from PostgreSQL 13.x (Chart version 0.2.x) to PostgreSQL 14.x (Chart version 0.3.x) or Postgres 14.x to Postgres 15.x (Chart version 0.4.x) and upgrade deployment will fail in case of a major version change.
 
 ## TL;DR
 
diff --git a/charts/postgres/RELEASENOTES.md b/charts/postgres/RELEASENOTES.md
index cd7d83dc9e3cafac629f48921e13ef23c79f05eb..41662697ab03eac7b7dc6dacfdda509993a71b92 100644
--- a/charts/postgres/RELEASENOTES.md
+++ b/charts/postgres/RELEASENOTES.md
@@ -19,4 +19,5 @@
 | 0.3.11 | 14.5 | Upgraded to Postgres 14.5 |
 | 0.3.12 | 14.5 | Implemented support for custom inline init scripts |
 | 0.3.13 | 14.5 | Implemented support for image.registry option |
+| 0.4.0 | 15.0 | Upgraded to Postgres 15.0 |
 | | | |