Upgrade Istio 1.4.3 to a higher version that supports kiali

Hi,
I have following istio installed on k8S, and when i tried to install kiali, came to know that istio 1.4.3 doesnt support kiali.

Could you please suggest how to upgrade the installed istio 1.4.3 to a higher version that supports kiali on the fly.

Thanks,
Anil

ISTIO:

[root@ ~]# helm ls -n istio-system
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
istio istio-system 3 2020-08-27 16:51:25.869058979 +0000 UTC deployed istio-1.4.3 1.4.3
istio-init istio-system 1 2020-03-25 07:22:55.781536409 +0000 UTC deployed istio-init-1.4.3 1.4.3
kiali-operator istio-system 1 2021-02-11 08:51:52.630390679 +0000 UTC deployed kiali-operator-1.29.1 v1.29.1