Hi DevG, Thank you!

By default, it will install with the latest version if we didn't mention the version when running the helm install command. If you need to specify the version that you want, below is the command that you can use. But before installing, check the compatible Kubernetes version as well.

helm install prometheus prometheus-community/kube-prometheus-stack --version 41.7.3

Note that I have used prometheus-community/helm-charts (https://github.com/prometheus-community/helm-charts)