diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 32586ed..3de6ba3 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -250,6 +250,8 @@ jobs:
           DATABASE_URL_AUTH: postgresql://postgres:postgres@localhost:5432/punimtag_auth
           NEXTAUTH_SECRET: test-secret-key-for-ci
           NEXTAUTH_URL: http://localhost:3001
+          RESEND_API_KEY: re_dummy_key_for_ci_build_only
+          RESEND_FROM_EMAIL: test@example.com
 
   secret-scanning:
     needs: skip-ci-check
diff --git a/viewer-frontend/app/api/auth/forgot-password/route.ts b/viewer-frontend/app/api/auth/forgot-password/route.ts
index bb8d0f3..0fdaaa2 100644
--- a/viewer-frontend/app/api/auth/forgot-password/route.ts
+++ b/viewer-frontend/app/api/auth/forgot-password/route.ts
@@ -3,6 +3,9 @@ import { prismaAuth } from '@/lib/db';
 import { generatePasswordResetToken, sendPasswordResetEmail } from '@/lib/email';
 import { isValidEmail } from '@/lib/utils';
 
+// Force dynamic rendering to prevent Resend initialization during build
+export const dynamic = 'force-dynamic';
+
 export async function POST(request: NextRequest) {
   try {
     const body = await request.json();
diff --git a/viewer-frontend/app/api/auth/register/route.ts b/viewer-frontend/app/api/auth/register/route.ts
index eec521c..958636c 100644
--- a/viewer-frontend/app/api/auth/register/route.ts
+++ b/viewer-frontend/app/api/auth/register/route.ts
@@ -4,6 +4,9 @@ import bcrypt from 'bcryptjs';
 import { generateEmailConfirmationToken, sendEmailConfirmation } from '@/lib/email';
 import { isValidEmail } from '@/lib/utils';
 
+// Force dynamic rendering to prevent Resend initialization during build
+export const dynamic = 'force-dynamic';
+
 export async function POST(request: NextRequest) {
   try {
     const body = await request.json();
diff --git a/viewer-frontend/app/api/auth/resend-confirmation/route.ts b/viewer-frontend/app/api/auth/resend-confirmation/route.ts
index 19cc682..b2b984f 100644
--- a/viewer-frontend/app/api/auth/resend-confirmation/route.ts
+++ b/viewer-frontend/app/api/auth/resend-confirmation/route.ts
@@ -2,6 +2,9 @@ import { NextRequest, NextResponse } from 'next/server';
 import { prismaAuth } from '@/lib/db';
 import { generateEmailConfirmationToken, sendEmailConfirmationResend } from '@/lib/email';
 
+// Force dynamic rendering to prevent Resend initialization during build
+export const dynamic = 'force-dynamic';
+
 export async function POST(request: NextRequest) {
   try {
     const body = await request.json();