Istioctl install command confirmation


When using ‘istioctl install -f {filename} --kubeconfig {filename} --readiness-timeout {value} --set revision={value} --set namespace={value}’ command for version 1.7.4 I am not being asked for confirmation but when I use the same command with version 1.8.6 I am being asked for confirmation with the following message:
This will install the Istio default profile with [“Istio core” “Istiod” “Ingress gateways”] components into the cluster. Proceed? (y/N) Cancelled.

Why is that? Is there any additional attributes that need to be defined?