diff --git a/config.yaml b/config.yaml
index a4cebd5..4dd2376 100644
--- a/config.yaml
+++ b/config.yaml
@@ -40,7 +40,7 @@ etcd:
         keyFile: /etc/etcd/kubernetes-key.pem
 imageRepository: k8s.gcr.io
 kind: ClusterConfiguration
-kubernetesVersion: v1.21.2
+kubernetesVersion: v1.21.3
 networking:
   dnsDomain: <domainfqdn>
   podSubnet: 10.244.0.0/16