diff --git a/argocd/thanos/monitoring/templates/thanos-query-deployment.yaml b/argocd/thanos/monitoring/templates/thanos-query-deployment.yaml
index 159f74b..b294fc4 100644
--- a/argocd/thanos/monitoring/templates/thanos-query-deployment.yaml
+++ b/argocd/thanos/monitoring/templates/thanos-query-deployment.yaml
@@ -47,6 +47,7 @@ spec:
         - --query.replica-label=prometheus_replica
         - --query.replica-label=rule_replica
         - --endpoint=dnssrv+_grpc._tcp.thanos-store.thanos.svc.cluster.local:10901
+        - --endpoint=dnssrv+_grpc._tcp.prometheus-kube-prometheus-thanos-discovery.observability.svc.cluster.local:10901
         {{- range .Values.clusters }}
         - "--endpoint={{ .thanosEndpoint }}:{{ .thanosPort }}"
         {{- end }}