diff --git a/pkg/cluster/k8sres.go b/pkg/cluster/k8sres.go
index 31e033925..76e0c0fa4 100644
--- a/pkg/cluster/k8sres.go
+++ b/pkg/cluster/k8sres.go
@@ -260,6 +260,10 @@ func (c *Cluster) generatePodTemplate(resourceRequirements *v1.ResourceRequireme
 				},
 			},
 		},
+		{
+			Name:  "PGUSER_SUPERUSER",
+			Value: c.OpConfig.SuperUsername,
+		},
 		{
 			Name: "PGPASSWORD_SUPERUSER",
 			ValueFrom: &v1.EnvVarSource{
@@ -271,6 +275,10 @@ func (c *Cluster) generatePodTemplate(resourceRequirements *v1.ResourceRequireme
 				},
 			},
 		},
+		{
+			Name:  "PGUSER_STANDBY",
+			Value: c.OpConfig.ReplicationUsername,
+		},
 		{
 			Name: "PGPASSWORD_STANDBY",
 			ValueFrom: &v1.EnvVarSource{