diff --git a/apps/api/src/db/seed.ts b/apps/api/src/db/seed.ts
index a20239d..004213b 100644
--- a/apps/api/src/db/seed.ts
+++ b/apps/api/src/db/seed.ts
@@ -4,10 +4,23 @@ import { db } from './client';
 import { activities, user } from './schema';
 import { auth } from '../auth';
 
-// Dev-only test account so `db:seed` yields ready-made login credentials for local
-// testing / phone demos. Created through better-auth (password is properly hashed).
-// NEVER seeded when NODE_ENV=production — see seedDevUser().
-const DEV_USER = { email: 'worker@solelog.local', password: 'werkplaats123', name: 'Test Werker' };
+// Dev-only accounts so `db:seed` yields ready-made logins for local testing / phone demos.
+// Created through better-auth's admin createUser (hashes the password, sets the role, and works
+// even though public sign-up is disabled). NEVER seeded when NODE_ENV=production.
+const DEV_ACCOUNTS = [
+  {
+    email: 'worker@solelog.local',
+    password: 'werkplaats123',
+    name: 'Test Werker',
+    role: 'worker' as const,
+  },
+  {
+    email: 'admin@solelog.local',
+    password: 'werkplaats-admin',
+    name: 'Test Beheerder',
+    role: 'admin' as const,
+  },
+];
 
 // Reference activities (realistic Dutch handeling names) — see
 // docs/reference/legacy-mobile-app.md §6.2 and the Phase 1 plan.
@@ -20,24 +33,22 @@ const REFERENCE_ACTIVITIES: { name: string; insoleTypes: string[] }[] = [
   { name: 'Printen', insoleTypes: ['3D'] },
 ];
 
-// Idempotent: create the dev account once, and only outside production (it has a
-// known password). Uses better-auth's server API so the user + hashed-password
-// account rows are created exactly as a real sign-up would.
-async function seedDevUser(): Promise<void> {
+async function seedDevUsers(): Promise<void> {
   if (process.env.NODE_ENV === 'production') return;
-  const existing = await db.select().from(user).where(eq(user.email, DEV_USER.email));
-  if (existing.length > 0) return;
-  await auth.api.signUpEmail({ body: DEV_USER });
-  console.log(`Seeded dev account: ${DEV_USER.email} / ${DEV_USER.password}`);
+  for (const acc of DEV_ACCOUNTS) {
+    const existing = await db.select().from(user).where(eq(user.email, acc.email));
+    if (existing.length > 0) continue;
+    await auth.api.createUser({
+      body: { email: acc.email, password: acc.password, name: acc.name, role: acc.role },
+    });
+    console.log(`Seeded dev ${acc.role}: ${acc.email} / ${acc.password}`);
+  }
 }
 
 // Idempotent: insert each reference activity only if no activity with that name exists.
 export async function seed(): Promise<void> {
   for (const activity of REFERENCE_ACTIVITIES) {
-    const existing = await db
-      .select()
-      .from(activities)
-      .where(eq(activities.name, activity.name));
+    const existing = await db.select().from(activities).where(eq(activities.name, activity.name));
     if (existing.length === 0) {
       await db.insert(activities).values({
         name: activity.name,
@@ -45,7 +56,7 @@ export async function seed(): Promise<void> {
       });
     }
   }
-  await seedDevUser();
+  await seedDevUsers();
 }
 
 // Allow running directly: `tsx src/db/seed.ts` (cross-platform — pathToFileURL
diff --git a/apps/api/test/seed.test.ts b/apps/api/test/seed.test.ts
index e29b457..e1b8ba8 100644
--- a/apps/api/test/seed.test.ts
+++ b/apps/api/test/seed.test.ts
@@ -9,36 +9,31 @@ const SEED_NAMES = ['Leerrand', 'Frezen', 'Slijpen', 'Bekleden', 'Afwerken', 'Pr
 describe('seed', () => {
   it('seeds the reference activities idempotently', async () => {
     await seed();
-    const first = await db
-      .select()
-      .from(activities)
-      .where(inArray(activities.name, SEED_NAMES));
+    const first = await db.select().from(activities).where(inArray(activities.name, SEED_NAMES));
     const countFirst = first.length;
 
     await seed();
-    const second = await db
-      .select()
-      .from(activities)
-      .where(inArray(activities.name, SEED_NAMES));
+    const second = await db.select().from(activities).where(inArray(activities.name, SEED_NAMES));
 
     expect(second.length).toBe(countFirst);
     expect(countFirst).toBe(SEED_NAMES.length);
 
-    const printen = await db
-      .select()
-      .from(activities)
-      .where(eq(activities.name, 'Printen'));
+    const printen = await db.select().from(activities).where(eq(activities.name, 'Printen'));
     expect(printen).toHaveLength(1);
     expect(printen[0]?.insoleTypes).toEqual(['3D']);
   });
 
-  it('seeds the dev test account idempotently (and only once)', async () => {
+  it('seeds the dev worker + dev admin idempotently with correct roles', async () => {
     await seed();
-    const first = await db.select().from(user).where(eq(user.email, 'worker@solelog.local'));
-    expect(first).toHaveLength(1);
+    const w = await db.select().from(user).where(eq(user.email, 'worker@solelog.local'));
+    const a = await db.select().from(user).where(eq(user.email, 'admin@solelog.local'));
+    expect(w).toHaveLength(1);
+    expect(a).toHaveLength(1);
+    expect((a[0] as { role?: string }).role).toBe('admin');
 
     await seed();
-    const second = await db.select().from(user).where(eq(user.email, 'worker@solelog.local'));
-    expect(second).toHaveLength(1);
+    expect(await db.select().from(user).where(eq(user.email, 'admin@solelog.local'))).toHaveLength(
+      1
+    );
   });
 });