diff --git a/packages/backend/src/server/api/ApiServerService.ts b/packages/backend/src/server/api/ApiServerService.ts
index dca827c55a..884ed0c8cb 100644
--- a/packages/backend/src/server/api/ApiServerService.ts
+++ b/packages/backend/src/server/api/ApiServerService.ts
@@ -1,11 +1,13 @@
 import { Inject, Injectable } from '@nestjs/common';
 import cors from '@fastify/cors';
 import multipart from '@fastify/multipart';
+import fastifyCookie from '@fastify/cookie';
 import { ModuleRef, repl } from '@nestjs/core';
 import type { Config } from '@/config.js';
 import type { UsersRepository, InstancesRepository, AccessTokensRepository } from '@/models/index.js';
 import { DI } from '@/di-symbols.js';
 import { UserEntityService } from '@/core/entities/UserEntityService.js';
+import { bindThis } from '@/decorators.js';
 import endpoints, { IEndpoint } from './endpoints.js';
 import { ApiCallService } from './ApiCallService.js';
 import { SignupApiService } from './SignupApiService.js';
@@ -13,7 +15,6 @@ import { SigninApiService } from './SigninApiService.js';
 import { GithubServerService } from './integration/GithubServerService.js';
 import { DiscordServerService } from './integration/DiscordServerService.js';
 import { TwitterServerService } from './integration/TwitterServerService.js';
-import { bindThis } from '@/decorators.js';
 import type { FastifyInstance, FastifyPluginOptions } from 'fastify';
 
 @Injectable()
@@ -57,6 +58,8 @@ export class ApiServerService {
 			},
 		});
 
+		fastify.register(fastifyCookie, {});
+
 		// Prevent cache
 		fastify.addHook('onRequest', (request, reply, done) => {
 			reply.header('Cache-Control', 'private, max-age=0, must-revalidate');