diff --git a/README.md b/README.md
index ee137e3..1582313 100644
--- a/README.md
+++ b/README.md
@@ -56,11 +56,11 @@ You must delete the PVCs manually if you want a fresh installation.
 
   - using a managed service such as [Amazon RDS](https://aws.amazon.com/rds/postgresql/) or [Google Cloud SQL](https://cloud.google.com/sql/docs/postgres)
 
-- Kubernetes 1.19+ is required.
+- Kubernetes 1.21+ is required.
 
 ### OMERO.web 0.4.0
 
-- Kubernetes 1.19+ is required.
+- Kubernetes 1.21+ is required.
 
 ## Development
 
diff --git a/omero-server/Chart.yaml b/omero-server/Chart.yaml
index 153fec7..f54fc1a 100644
--- a/omero-server/Chart.yaml
+++ b/omero-server/Chart.yaml
@@ -2,5 +2,5 @@ apiVersion: v1
 appVersion: 5.6.5
 description: OMERO.server
 name: omero-server
-version: 0.3.4
+version: 0.4.0
 icon: https://www.openmicroscopy.org/img/logos/omero-logomark.svg
diff --git a/omero-web/Chart.yaml b/omero-web/Chart.yaml
index 47862b3..069ad8f 100644
--- a/omero-web/Chart.yaml
+++ b/omero-web/Chart.yaml
@@ -2,5 +2,5 @@ apiVersion: v1
 appVersion: 5.14.0
 description: OMERO.web
 name: omero-web
-version: 0.3.3
+version: 0.4.0
 icon: https://www.openmicroscopy.org/img/logos/omero-logomark.svg