diff --git a/src/modules/admin/dto/create-admin.dto.ts b/src/modules/admin/dto/create-admin.dto.ts
index 8acff49..7892b6a 100644
--- a/src/modules/admin/dto/create-admin.dto.ts
+++ b/src/modules/admin/dto/create-admin.dto.ts
@@ -1,10 +1,11 @@
 import { ApiProperty } from '@nestjs/swagger';
-import { IsNotEmpty, IsOptional, IsString } from 'class-validator';
+import { IsNotEmpty, IsOptional, IsPhoneNumber, IsString } from 'class-validator';
 
 export class CreateAdminDto {
   @ApiProperty({ description: 'Mobile phone number' })
   @IsNotEmpty()
   @IsString()
+  @IsPhoneNumber("IR")
   phone!: string;
 
   @ApiProperty({ description: 'First name', required: false })