diff --git a/backend/prisma/schema.prisma b/backend/prisma/schema.prisma
index 347c764..b321752 100644
--- a/backend/prisma/schema.prisma
+++ b/backend/prisma/schema.prisma
@@ -7,7 +7,6 @@ generator client {
 
 datasource db {
   provider = "postgresql"
-  url      = env("DATABASE_URL")
 }
 
 model User {
diff --git a/backend/src/admin/packs/dto/update-pack.dto.ts b/backend/src/admin/packs/dto/update-pack.dto.ts
index d07f09f..4482bd5 100644
--- a/backend/src/admin/packs/dto/update-pack.dto.ts
+++ b/backend/src/admin/packs/dto/update-pack.dto.ts
@@ -1,4 +1,23 @@
-import { IsString, IsBoolean, IsArray, IsOptional } from 'class-validator';
+import { IsString, IsBoolean, IsArray, IsOptional, ValidateNested, IsNumber } from 'class-validator';
+import { Type } from 'class-transformer';
+
+class AnswerDto {
+  @IsString()
+  text: string;
+
+  @IsNumber()
+  points: number;
+}
+
+class QuestionDto {
+  @IsString()
+  question: string;
+
+  @IsArray()
+  @ValidateNested({ each: true })
+  @Type(() => AnswerDto)
+  answers: AnswerDto[];
+}
 
 export class UpdatePackDto {
   @IsOptional()
@@ -19,5 +38,7 @@ export class UpdatePackDto {
 
   @IsOptional()
   @IsArray()
-  questions?: Array<{ question: string; answer: string }>;
+  @ValidateNested({ each: true })
+  @Type(() => QuestionDto)
+  questions?: QuestionDto[];
 }