diff --git a/prisma/migrations/20241101031006_change_constraints/migration.sql b/prisma/migrations/20241101031006_change_constraints/migration.sql
new file mode 100644
index 0000000..21e2fae
--- /dev/null
+++ b/prisma/migrations/20241101031006_change_constraints/migration.sql
@@ -0,0 +1,11 @@
+-- DropForeignKey
+ALTER TABLE "Invoice" DROP CONSTRAINT "Invoice_quotationId_fkey";
+
+-- DropForeignKey
+ALTER TABLE "Payment" DROP CONSTRAINT "Payment_invoiceId_fkey";
+
+-- AddForeignKey
+ALTER TABLE "Invoice" ADD CONSTRAINT "Invoice_quotationId_fkey" FOREIGN KEY ("quotationId") REFERENCES "Quotation"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "Payment" ADD CONSTRAINT "Payment_invoiceId_fkey" FOREIGN KEY ("invoiceId") REFERENCES "Invoice"("id") ON DELETE CASCADE ON UPDATE CASCADE;
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index a1143c6..e5517ea 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -1256,7 +1256,7 @@ model QuotationProductServiceWorker {
 model Invoice {
   id String @id @default(cuid())
 
-  quotation   Quotation @relation(fields: [quotationId], references: [id])
+  quotation   Quotation @relation(fields: [quotationId], references: [id], onDelete: Cascade)
   quotationId String
 
   installments QuotationPaySplit[]
@@ -1280,7 +1280,7 @@ enum PaymentStatus {
 model Payment {
   id String @id @default(cuid())
 
-  invoice   Invoice @relation(fields: [invoiceId], references: [id])
+  invoice   Invoice @relation(fields: [invoiceId], references: [id], onDelete: Cascade)
   invoiceId String  @unique
 
   paymentStatus PaymentStatus