diff --git a/charts/nfs-subdir-external-provisioner/Chart.yaml b/charts/nfs-subdir-external-provisioner/Chart.yaml
index 1f143b66..42b53c25 100644
--- a/charts/nfs-subdir-external-provisioner/Chart.yaml
+++ b/charts/nfs-subdir-external-provisioner/Chart.yaml
@@ -1,10 +1,10 @@
 apiVersion: v1
-appVersion: 4.0.2
+appVersion: 4.0.3
 description: nfs-subdir-external-provisioner is an automatic provisioner that used your *already configured* NFS server, automatically creating Persistent Volumes.
 name: nfs-subdir-external-provisioner
 home: https://github.com/kubernetes-sigs/nfs-subdir-external-provisioner
-version: 4.0.19
-kubeVersion: ">=1.9.0-0"
+version: 4.0.20
+kubeVersion: ">=1.21.0-0"
 sources:
 - https://github.com/kubernetes-sigs/nfs-subdir-external-provisioner
 keywords:
diff --git a/charts/nfs-subdir-external-provisioner/README.md b/charts/nfs-subdir-external-provisioner/README.md
index eb4e41e5..f2ca2187 100644
--- a/charts/nfs-subdir-external-provisioner/README.md
+++ b/charts/nfs-subdir-external-provisioner/README.md
@@ -17,7 +17,7 @@ This charts installs custom [storage class](https://kubernetes.io/docs/concepts/
 
 ## Prerequisites
 
-- Kubernetes >=1.9
+- Kubernetes >=1.21
 - Existing NFS Share
 
 ## Installing the Chart