diff --git a/db.go b/db.go
index e795ad7..b0aec17 100644
--- a/db.go
+++ b/db.go
@@ -42,7 +42,8 @@ func OpenDB(config *Config) (db *gorm.DB, err error) {
 
 type Invoice struct {
 	gorm.Model
-	AddIndex uint64
+	AddIndex    uint64
+	SettleIndex uint64
 }
 
 type Payment struct {
diff --git a/service.go b/service.go
index 4e38cdd..145a4b2 100644
--- a/service.go
+++ b/service.go
@@ -140,7 +140,8 @@ func (svc *Service) lookupLastPaymentTimestamp(ctx context.Context) (lastPayment
 
 func (svc *Service) AddLastPublishedInvoice(ctx context.Context, invoice *lnrpc.Invoice) error {
 	return svc.db.WithContext(ctx).Create(&Invoice{
-		AddIndex: invoice.AddIndex,
+		AddIndex:    invoice.AddIndex,
+		SettleIndex: invoice.SettleIndex,
 	}).Error
 }