# Facing issue in upgrading cluster from 1.20.0.to 1.20.1-00

**URL:** <https://discuss.kubernetes.io/t/facing-issue-in-upgrading-cluster-from-1-20-0-to-1-20-1-00/18867>\
**Category:** General Discussions\
**Created:** [January 24, 2022, 8:13pm UTC](https://discuss.kubernetes.io/t/facing-issue-in-upgrading-cluster-from-1-20-0-to-1-20-1-00/18867 "2022-01-24T20:13:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Surbhi\_Pathak](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.kubernetes.io/surbhi_pathak/32/9390_2.png) [@Surbhi\_Pathak](https://discuss.kubernetes.io/u/Surbhi_Pathak)\
**Post date:** [January 24, 2022, 8:13pm UTC](https://discuss.kubernetes.io/t/facing-issue-in-upgrading-cluster-from-1-20-0-to-1-20-1-00/18867/1 "2022-01-24T20:13:47Z")

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Getting this error while upgrade:  
Command used: apt-get install kubeadm=1.20.1-00 kubelet=1.20.1-00 kubectl=1.20.1-00

E: Version ‘1.20.1-00’ for ‘kubeadm’ was not found  
E: Version ‘1.20.1-00’ for ‘kubelet’ was not found  
E: Version ‘1.20.1-00’ for ‘kubectl’ was not found

Tried in Katakoda Kubernetes playground

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**Author:** ![tej-singh-rana](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.kubernetes.io/tej-singh-rana/32/5921_2.png) [@tej-singh-rana](https://discuss.kubernetes.io/u/tej-singh-rana)\
**Post date:** [January 25, 2022, 7:36pm UTC](https://discuss.kubernetes.io/t/facing-issue-in-upgrading-cluster-from-1-20-0-to-1-20-1-00/18867/2 "2022-01-25T19:36:03Z")

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hey @Surbhi_Pathak  
You can use `apt-cache madison <package-name>` to search available versions to install. If it’s not available then update it first (`apt-get update`)  
Reference link -

> **[Upgrading kubeadm clusters](https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade/#determine-which-version-to-upgrade-to)**
>
> This page explains how to upgrade a Kubernetes cluster created with kubeadm from version 1.22.x to version 1.23.x, and from version 1.23.x to 1.23.y (where y \> x). Skipping MINOR versions when upgrading is unsupported.
> To see information about...