diff --git a/stackit/internal/services/iaas/publicip/resource.go b/stackit/internal/services/iaas/publicip/resource.go
index 507a182f8..5a8e40858 100644
--- a/stackit/internal/services/iaas/publicip/resource.go
+++ b/stackit/internal/services/iaas/publicip/resource.go
@@ -165,6 +165,9 @@ func (r *publicIpResource) Schema(_ context.Context, _ resource.SchemaRequest, r
 				Description: "Associates the public IP with a network interface or a virtual IP (ID). If you are using this resource with a Kubernetes Load Balancer or any other resource which associates a network interface implicitly, use the lifecycle `ignore_changes` property in this field to prevent unintentional removal of the network interface due to drift in the Terraform state",
 				Optional:    true,
 				Computed:    true,
+				PlanModifiers: []planmodifier.String{
+					stringplanmodifier.UseStateForUnknown(),
+				},
 				Validators: []validator.String{
 					validate.UUID(),
 					validate.NoSeparator(),