diff --git a/opensearch-operator/pkg/builders/cluster.go b/opensearch-operator/pkg/builders/cluster.go
index 1fe9c615a..fd77b5e4b 100644
--- a/opensearch-operator/pkg/builders/cluster.go
+++ b/opensearch-operator/pkg/builders/cluster.go
@@ -618,6 +618,7 @@ func NewHeadlessServiceForNodePool(cr *opsterv1.OpenSearchCluster, nodePool *ops
 					TargetPort: intstr.IntOrString{
 						IntVal: cr.Spec.General.HttpPort,
 					},
+					AppProtocol: pointer.String("https"),
 				},
 				{
 					Name:     "transport",
@@ -659,6 +660,7 @@ func NewServiceForCR(cr *opsterv1.OpenSearchCluster) *corev1.Service {
 					TargetPort: intstr.IntOrString{
 						IntVal: cr.Spec.General.HttpPort,
 					},
+					AppProtocol: pointer.String("https"),
 				},
 				{
 					Name:     "transport",
@@ -748,6 +750,7 @@ func NewNodePortService(cr *opsterv1.OpenSearchCluster) *corev1.Service {
 					TargetPort: intstr.IntOrString{
 						IntVal: cr.Spec.General.HttpPort,
 					},
+					AppProtocol: pointer.String("https"),
 				},
 			},
 			Selector: labels,