Not sending alerts for new event if already in alerting state

I have setup a query “topk(10, kube_pod_status_phase{phase !~ “Running|Succeeded|Failed|Unknown”})” that indicate the state of a pod. It gives me alert if pod is in pending state for more than 5 minutes. But once alerted, its is not generating a new alert if a new pod going in pending state. Could any one suggest some configuration changes or query changes so that if should alert every time if new pod is entering pending state.