diff --git a/src/users/dto/create-user-settings.dto.ts b/src/users/dto/create-user-settings.dto.ts
index 923d616bf..63095f1c2 100644
--- a/src/users/dto/create-user-settings.dto.ts
+++ b/src/users/dto/create-user-settings.dto.ts
@@ -1,7 +1,9 @@
 import { ApiProperty } from "@nestjs/swagger";
 import { UpdateUserSettingsDto } from "./update-user-settings.dto";
+import { IsString } from "class-validator";
 
 export class CreateUserSettingsDto extends UpdateUserSettingsDto {
   @ApiProperty({ type: String, required: true })
+  @IsString()
   readonly userId: string;
 }
diff --git a/src/users/dto/update-user-settings.dto.ts b/src/users/dto/update-user-settings.dto.ts
index 5aac97f77..8458e4e84 100644
--- a/src/users/dto/update-user-settings.dto.ts
+++ b/src/users/dto/update-user-settings.dto.ts
@@ -3,21 +3,27 @@ import {
   FilterConfig,
   ScientificCondition,
 } from "../schemas/user-settings.schema";
+import { IsArray, IsNumber } from "class-validator";
 
 export class UpdateUserSettingsDto {
   @ApiProperty()
+  @IsArray()
   readonly columns: Record<string, unknown>[];
 
   @ApiProperty({ type: Number, required: false, default: 25 })
+  @IsNumber()
   readonly datasetCount?: number;
 
   @ApiProperty({ type: Number, required: false, default: 25 })
+  @IsNumber()
   readonly jobCount?: number;
 
   @ApiProperty()
+  @IsArray()
   readonly filters: FilterConfig[];
 
   @ApiProperty()
+  @IsArray()
   readonly conditions: ScientificCondition[];
 }