diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 1627b4439b..cae6b1a125 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -436,12 +436,6 @@ importers:
       chokidar:
         specifier: ^4.0.3
         version: 4.0.3
-      class-transformer:
-        specifier: ^0.5.1
-        version: 0.5.1
-      class-validator:
-        specifier: ^0.14.0
-        version: 0.14.4
       compression:
         specifier: ^1.8.0
         version: 1.8.1
@@ -18257,13 +18251,15 @@ snapshots:
 
   cjs-module-lexer@2.2.0: {}
 
-  class-transformer@0.5.1: {}
+  class-transformer@0.5.1:
+    optional: true
 
   class-validator@0.14.4:
     dependencies:
       '@types/validator': 13.15.10
       libphonenumber-js: 1.12.38
       validator: 13.15.26
+    optional: true
 
   clean-css@5.3.3:
     dependencies:
@@ -21104,7 +21100,8 @@ snapshots:
       prelude-ls: 1.2.1
       type-check: 0.4.0
 
-  libphonenumber-js@1.12.38: {}
+  libphonenumber-js@1.12.38:
+    optional: true
 
   lightningcss-android-arm64@1.31.1:
     optional: true
diff --git a/server/package.json b/server/package.json
index 339f3ed409..d4fff077bf 100644
--- a/server/package.json
+++ b/server/package.json
@@ -65,8 +65,6 @@
     "body-parser": "^2.2.0",
     "bullmq": "^5.51.0",
     "chokidar": "^4.0.3",
-    "class-transformer": "^0.5.1",
-    "class-validator": "^0.14.0",
     "compression": "^1.8.0",
     "cookie": "^1.0.2",
     "cookie-parser": "^1.4.7",
diff --git a/server/src/bin/sync-sql.ts b/server/src/bin/sync-sql.ts
index b632332069..5be9ae29b9 100644
--- a/server/src/bin/sync-sql.ts
+++ b/server/src/bin/sync-sql.ts
@@ -3,7 +3,6 @@ import { INestApplication } from '@nestjs/common';
 import { Reflector } from '@nestjs/core';
 import { SchedulerRegistry } from '@nestjs/schedule';
 import { Test } from '@nestjs/testing';
-import { ClassConstructor } from 'class-transformer';
 import { ClsModule } from 'nestjs-cls';
 import { KyselyModule } from 'nestjs-kysely';
 import { OpenTelemetryModule } from 'nestjs-otel';
@@ -44,7 +43,7 @@ export class SqlLogger {
 
 const reflector = new Reflector();
 
-type Repository = ClassConstructor<any>;
+type Repository = new (...args: any[]) => any;
 type SqlGeneratorOptions = { targetDir: string };
 
 class SqlGenerator {
diff --git a/server/src/repositories/event.repository.ts b/server/src/repositories/event.repository.ts
index fbc281ccb3..c505dd3fb3 100644
--- a/server/src/repositories/event.repository.ts
+++ b/server/src/repositories/event.repository.ts
@@ -1,6 +1,5 @@
 import { Injectable } from '@nestjs/common';
 import { ModuleRef, Reflector } from '@nestjs/core';
-import { ClassConstructor } from 'class-transformer';
 import _ from 'lodash';
 import { Socket } from 'socket.io';
 import { SystemConfig } from 'src/config';
@@ -152,7 +151,7 @@ export class EventRepository {
     this.logger.setContext(EventRepository.name);
   }
 
-  setup({ services }: { services: ClassConstructor<unknown>[] }) {
+  setup({ services }: { services: (new (...args: any[]) => unknown)[] }) {
     const reflector = this.moduleRef.get(Reflector, { strict: false });
     const items: Item<EmitEvent>[] = [];
     const worker = this.configRepository.getWorker();
diff --git a/server/src/repositories/job.repository.ts b/server/src/repositories/job.repository.ts
index b12accb68e..4ea19f9cc7 100644
--- a/server/src/repositories/job.repository.ts
+++ b/server/src/repositories/job.repository.ts
@@ -2,7 +2,6 @@ import { getQueueToken } from '@nestjs/bullmq';
 import { Injectable } from '@nestjs/common';
 import { ModuleRef, Reflector } from '@nestjs/core';
 import { JobsOptions, Queue, Worker } from 'bullmq';
-import { ClassConstructor } from 'class-transformer';
 import { setTimeout } from 'node:timers/promises';
 import { JobConfig } from 'src/decorators';
 import { QueueJobResponseDto, QueueJobSearchDto } from 'src/dtos/queue.dto';
@@ -34,7 +33,7 @@ export class JobRepository {
     this.logger.setContext(JobRepository.name);
   }
 
-  setup(services: ClassConstructor<unknown>[]) {
+  setup(services: (new (...args: any[]) => unknown)[]) {
     const reflector = this.moduleRef.get(Reflector, { strict: false });
 
     // discovery
diff --git a/server/src/repositories/telemetry.repository.ts b/server/src/repositories/telemetry.repository.ts
index 5fbbb76cf7..d87c0acf5a 100644
--- a/server/src/repositories/telemetry.repository.ts
+++ b/server/src/repositories/telemetry.repository.ts
@@ -11,7 +11,6 @@ import { resourceFromAttributes } from '@opentelemetry/resources';
 import { AggregationType } from '@opentelemetry/sdk-metrics';
 import { NodeSDK, contextBase } from '@opentelemetry/sdk-node';
 import { ATTR_SERVICE_NAME, ATTR_SERVICE_VERSION } from '@opentelemetry/semantic-conventions';
-import { ClassConstructor } from 'class-transformer';
 import { snakeCase, startCase } from 'lodash';
 import { MetricService } from 'nestjs-otel';
 import { copyMetadataFromFunctionToFunction } from 'nestjs-otel/lib/opentelemetry.utils';
@@ -118,7 +117,7 @@ export class TelemetryRepository {
     this.repo = new MetricGroupRepository(metricService).configure({ enabled: metrics.has(ImmichTelemetry.Repo) });
   }
 
-  setup({ repositories }: { repositories: ClassConstructor<unknown>[] }) {
+  setup({ repositories }: { repositories: (new (...args: any[]) => unknown)[] }) {
     const { telemetry } = this.configRepository.getEnv();
     const { metrics } = telemetry;
     if (!metrics.has(ImmichTelemetry.Repo)) {
@@ -136,7 +135,7 @@ export class TelemetryRepository {
     }
   }
 
-  private wrap(Repository: ClassConstructor<unknown>) {
+  private wrap(Repository: new (...args: any[]) => unknown) {
     const className = Repository.name;
     const descriptors = Object.getOwnPropertyDescriptors(Repository.prototype);
     const unit = 'ms';
diff --git a/server/src/services/auth.service.ts b/server/src/services/auth.service.ts
index b8e1b78107..e87d605602 100644
--- a/server/src/services/auth.service.ts
+++ b/server/src/services/auth.service.ts
@@ -1,5 +1,4 @@
 import { BadRequestException, ForbiddenException, Injectable, UnauthorizedException } from '@nestjs/common';
-import { isString } from 'class-validator';
 import { parse } from 'cookie';
 import { DateTime } from 'luxon';
 import { IncomingHttpHeaders } from 'node:http';
@@ -307,7 +306,7 @@ export class AuthService extends BaseService {
       const storageLabel = this.getClaim(profile, {
         key: storageLabelClaim,
         default: '',
-        isValid: isString,
+        isValid: (value: unknown): value is string => typeof value === 'string',
       });
       const storageQuota = this.getClaim(profile, {
         key: storageQuotaClaim,
@@ -317,7 +316,7 @@ export class AuthService extends BaseService {
       const role = this.getClaim<'admin' | 'user'>(profile, {
         key: roleClaim,
         default: 'user',
-        isValid: (value: unknown) => isString(value) && ['admin', 'user'].includes(value),
+        isValid: (value: unknown) => typeof value === 'string' && ['admin', 'user'].includes(value),
       });
 
       const userName = profile.name ?? `${profile.given_name || ''} ${profile.family_name || ''}`;
diff --git a/server/src/services/notification.service.spec.ts b/server/src/services/notification.service.spec.ts
index ee4b4ec05f..55f45156cc 100644
--- a/server/src/services/notification.service.spec.ts
+++ b/server/src/services/notification.service.spec.ts
@@ -1,4 +1,3 @@
-import { plainToInstance } from 'class-transformer';
 import { defaults, SystemConfig } from 'src/config';
 import { SystemConfigDto } from 'src/dtos/system-config.dto';
 import { AssetFileType, JobName, JobStatus, UserMetadataKey } from 'src/enum';
@@ -101,7 +100,7 @@ describe(NotificationService.name, () => {
 
     it('skips smtp validation with DTO when there are no changes', async () => {
       const oldConfig = { ...configs.smtpEnabled };
-      const newConfig = plainToInstance(SystemConfigDto, configs.smtpEnabled);
+      const newConfig = configs.smtpEnabled as SystemConfigDto;
 
       await expect(sut.onConfigValidate({ oldConfig, newConfig })).resolves.not.toThrow();
       expect(mocks.email.verifySmtp).not.toHaveBeenCalled();
diff --git a/server/src/services/queue.service.ts b/server/src/services/queue.service.ts
index cdfa2ad2ed..662ccbe618 100644
--- a/server/src/services/queue.service.ts
+++ b/server/src/services/queue.service.ts
@@ -1,5 +1,4 @@
 import { BadRequestException, Injectable } from '@nestjs/common';
-import { ClassConstructor } from 'class-transformer';
 import { SystemConfig } from 'src/config';
 import { OnEvent } from 'src/decorators';
 import { AuthDto } from 'src/dtos/auth.dto';
@@ -39,7 +38,7 @@ const asNightlyTasksCron = (config: SystemConfig) => {
 
 @Injectable()
 export class QueueService extends BaseService {
-  private services: ClassConstructor<unknown>[] = [];
+  private services: (new (...args: any[]) => unknown)[] = [];
   private nightlyJobsLock = false;
 
   @OnEvent({ name: 'ConfigInit' })
@@ -96,7 +95,7 @@ export class QueueService extends BaseService {
     }
   }
 
-  setServices(services: ClassConstructor<unknown>[]) {
+  setServices(services: (new (...args: any[]) => unknown)[]) {
     this.services = services;
   }
 
diff --git a/server/src/services/system-config.service.ts b/server/src/services/system-config.service.ts
index ea95b4df24..981141b02e 100644
--- a/server/src/services/system-config.service.ts
+++ b/server/src/services/system-config.service.ts
@@ -1,5 +1,4 @@
 import { BadRequestException, Injectable } from '@nestjs/common';
-import { instanceToPlain } from 'class-transformer';
 import _ from 'lodash';
 import { defaults } from 'src/config';
 import { OnEvent } from 'src/decorators';
@@ -61,7 +60,7 @@ export class SystemConfigService extends BaseService {
   @OnEvent({ name: 'ConfigValidate' })
   onConfigValidate({ newConfig, oldConfig }: ArgOf<'ConfigValidate'>) {
     const { logLevel } = this.configRepository.getEnv();
-    if (!_.isEqual(instanceToPlain(newConfig.logging), oldConfig.logging) && logLevel) {
+    if (!_.isEqual(toPlainObject(newConfig.logging), oldConfig.logging) && logLevel) {
       throw new Error('Logging cannot be changed while the environment variable IMMICH_LOG_LEVEL is set.');
     }
   }
diff --git a/server/test/utils.ts b/server/test/utils.ts
index 20410ae701..aa9a9735bf 100644
--- a/server/test/utils.ts
+++ b/server/test/utils.ts
@@ -3,7 +3,6 @@ import { CallHandler, ExecutionContext, Provider } from '@nestjs/common';
 import { APP_FILTER, APP_GUARD, APP_INTERCEPTOR, APP_PIPE } from '@nestjs/core';
 import { transformException } from '@nestjs/platform-express/multer/multer/multer.utils';
 import { Test } from '@nestjs/testing';
-import { ClassConstructor } from 'class-transformer';
 import { NextFunction } from 'express';
 import { Kysely } from 'kysely';
 import multer from 'multer';
@@ -93,7 +92,7 @@ export type ControllerContext = {
   close: () => Promise<void>;
 };
 
-export const controllerSetup = async (controller: ClassConstructor<unknown>, providers: Provider[]) => {
+export const controllerSetup = async (controller: new (...args: any[]) => unknown, providers: Provider[]) => {
   const noopInterceptor = { intercept: (ctx: never, next: CallHandler<unknown>) => next.handle() };
   const upload = multer({ storage: multer.memoryStorage() });
   const memoryFileInterceptor = {
@@ -164,14 +163,14 @@ const mockFn = (label: string, { strict }: { strict: boolean }) => {
   });
 };
 
-export const mockBaseService = <T extends BaseService>(service: ClassConstructor<T>) => {
+export const mockBaseService = <T extends BaseService>(service: new (...args: any[]) => T) => {
   return automock(service, { args: [{ setContext: () => {} }], strict: false });
 };
 
 export const automock = <T>(
-  Dependency: ClassConstructor<T>,
+  Dependency: new (...args: any[]) => T,
   options?: {
-    args?: ConstructorParameters<ClassConstructor<T>>;
+    args?: ConstructorParameters<new (...args: any[]) => T>;
     strict?: boolean;
   },
 ): AutoMocked<T> => {