diff --git a/database/migrations/.snapshot-negareh.json b/database/migrations/.snapshot-negareh.json
index 41997d2..9ac3c42 100644
--- a/database/migrations/.snapshot-negareh.json
+++ b/database/migrations/.snapshot-negareh.json
@@ -732,67 +732,6 @@
       "foreignKeys": {},
       "nativeEnums": {}
     },
-    {
-      "columns": {
-        "phone": {
-          "name": "phone",
-          "type": "varchar(255)",
-          "unsigned": false,
-          "autoincrement": false,
-          "primary": false,
-          "nullable": false,
-          "length": 255,
-          "mappedType": "string"
-        },
-        "code": {
-          "name": "code",
-          "type": "varchar(255)",
-          "unsigned": false,
-          "autoincrement": false,
-          "primary": false,
-          "nullable": false,
-          "length": 255,
-          "mappedType": "string"
-        },
-        "expires_at": {
-          "name": "expires_at",
-          "type": "timestamptz",
-          "unsigned": false,
-          "autoincrement": false,
-          "primary": false,
-          "nullable": false,
-          "length": 6,
-          "mappedType": "datetime"
-        }
-      },
-      "name": "otp",
-      "schema": "public",
-      "indexes": [
-        {
-          "keyName": "otp_phone_index",
-          "columnNames": [
-            "phone"
-          ],
-          "composite": false,
-          "constraint": false,
-          "primary": false,
-          "unique": false
-        },
-        {
-          "keyName": "otp_pkey",
-          "columnNames": [
-            "phone"
-          ],
-          "composite": false,
-          "constraint": true,
-          "primary": true,
-          "unique": true
-        }
-      ],
-      "checks": [],
-      "foreignKeys": {},
-      "nativeEnums": {}
-    },
     {
       "columns": {
         "id": {
diff --git a/database/migrations/Migration20260422123253.ts b/database/migrations/Migration20260422123253.ts
new file mode 100644
index 0000000..3bb6006
--- /dev/null
+++ b/database/migrations/Migration20260422123253.ts
@@ -0,0 +1,24 @@
+import { Migration } from '@mikro-orm/migrations';
+
+export class Migration20260422123253 extends Migration {
+
+  override async up(): Promise<void> {
+    // Create sequence for invoice_number
+    this.addSql(`CREATE SEQUENCE IF NOT EXISTS invoice_number_seq START 1;`);
+    
+    // Set the sequence to start from the max existing invoice_number + 1
+    this.addSql(`SELECT setval('invoice_number_seq', COALESCE((SELECT MAX(invoice_number) FROM invoices), 0) + 1, false);`);
+    
+    // Set default value for invoice_number to use the sequence
+    this.addSql(`ALTER TABLE invoices ALTER COLUMN invoice_number SET DEFAULT nextval('invoice_number_seq');`);
+  }
+
+  override async down(): Promise<void> {
+    // Remove default from invoice_number
+    this.addSql(`ALTER TABLE invoices ALTER COLUMN invoice_number DROP DEFAULT;`);
+    
+    // Drop the sequence
+    this.addSql(`DROP SEQUENCE IF EXISTS invoice_number_seq;`);
+  }
+
+}