Update your deployment with a new image version

kubectl set image deployment/frontend www=image:v2 

kubectl set image deployment/nginx-deployment nginx=nginx:1.8

export TILLER_TAG=v2.0.0-beta.1        # Select your version to install
$ kubectl --namespace=kube-system set image deployments/tiller-deploy tiller=ghcr.io/helm/tiller:$TILLER_TAG
deployment "tiller-deploy" image updated

• kubectl set [ image | selector | env ]
• kind: Deployment, kubectl apply, kubectl set image, kubectl create deploy

https://kubernetes.io/docs/reference/kubectl/cheatsheet/#updating-resources