# Testing the XListenerSet feature in v1.20.0-alpha.1 In order to test out the XListenerSet feature: ```bash helm upgrade --install cert-manager oci://quay.io/jetstack/charts/cert-manager --version v1.20.0-alpha.1 \ --namespace cert-manager \ --set config.apiVersion="controller.config.cert-manager.io/v1alpha1" \ --set config.kind="ControllerConfiguration" \ --set config.enableGatewayAPI=true \ --set config.enableGatewayAPIXListenerSet=true \ --set config.featureGates.ServerSideApply=true ```