diff --git a/src/schemas.ts b/src/schemas.ts
index bd704e4..18cadf3 100644
--- a/src/schemas.ts
+++ b/src/schemas.ts
@@ -16,6 +16,10 @@ import type { AdminPermission } from './types.js';
 
 
 
+// ADMIN_ROLES and ADMIN_PERMISSIONS must mirror the ratified vocabulary in
+// @tummycrypt/tinyland-auth v0.4.0 (src/types/auth.ts ADMIN_ROLES,
+// src/types/permissions.ts AdminPermission) exactly. See TIN-2435.
+// tests/vocabulary-alignment.test.ts asserts this stays in sync.
 export const ADMIN_ROLES: AdminRole[] = [
   'super_admin',
   'admin',
@@ -23,6 +27,7 @@ export const ADMIN_ROLES: AdminRole[] = [
   'editor',
   'event_manager',
   'contributor',
+  'member',
   'viewer',
 ];
 
@@ -32,7 +37,6 @@ export const ADMIN_ROLES: AdminRole[] = [
 export const ADMIN_PERMISSIONS: AdminPermission[] = [
   'admin.access',
   'admin.users.manage',
-  'admin.users.moderate',
   'admin.content.manage',
   'admin.content.moderate',
   'admin.events.manage',
@@ -63,6 +67,7 @@ export const adminUserSchema = z.object({
     'editor',
     'event_manager',
     'contributor',
+    'member',
     'viewer',
   ]),
   certificateCn: z.string().nullable().optional(),
@@ -93,6 +98,7 @@ export const createAdminUserSchema = z.object({
     'editor',
     'event_manager',
     'contributor',
+    'member',
     'viewer',
   ]),
   totpEnabled: z.boolean().optional().default(false),
@@ -114,6 +120,8 @@ export const updateAdminUserSchema = z.object({
       'editor',
       'event_manager',
       'moderator',
+      'contributor',
+      'member',
       'viewer',
     ])
     .optional(),
diff --git a/src/types.ts b/src/types.ts
index b89f97d..073581c 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -10,10 +10,14 @@
 
 
 
+// Must mirror the ratified permission vocabulary in @tummycrypt/tinyland-auth
+// v0.4.0 (src/types/permissions.ts AdminPermission). This is a validated
+// subset (not the full 21-permission authority set); every entry here must
+// also exist there. See TIN-2435; tests/vocabulary-alignment.test.ts asserts
+// this stays in sync.
 export type AdminPermission =
   | 'admin.access'
   | 'admin.users.manage'
-  | 'admin.users.moderate'
   | 'admin.content.manage'
   | 'admin.content.moderate'
   | 'admin.events.manage'
diff --git a/tests/admin-validation.test.ts b/tests/admin-validation.test.ts
index 2680717..41aba53 100644
--- a/tests/admin-validation.test.ts
+++ b/tests/admin-validation.test.ts
@@ -162,11 +162,10 @@ describe('Types', () => {
     expect(log.admin_user_id).toBe('usr_1');
   });
 
-  it('AdminPermission type allows all 9 permission values', () => {
+  it('AdminPermission type allows all 8 permission values', () => {
     const perms: AdminPermission[] = [
       'admin.access',
       'admin.users.manage',
-      'admin.users.moderate',
       'admin.content.manage',
       'admin.content.moderate',
       'admin.events.manage',
@@ -174,7 +173,7 @@ describe('Types', () => {
       'admin.settings.manage',
       'admin.security.manage',
     ];
-    expect(perms).toHaveLength(9);
+    expect(perms).toHaveLength(8);
   });
 });
 
@@ -183,8 +182,8 @@ describe('Types', () => {
 
 
 describe('ADMIN_ROLES', () => {
-  it('has exactly 7 entries', () => {
-    expect(ADMIN_ROLES).toHaveLength(7);
+  it('has exactly 8 entries', () => {
+    expect(ADMIN_ROLES).toHaveLength(8);
   });
 
   it('includes super_admin', () => {
@@ -215,8 +214,8 @@ describe('ADMIN_ROLES', () => {
     expect(ADMIN_ROLES).toContain('viewer');
   });
 
-  it('does not include member', () => {
-    expect(ADMIN_ROLES).not.toContain('member');
+  it('includes member', () => {
+    expect(ADMIN_ROLES).toContain('member');
   });
 
   it('is an array', () => {
@@ -229,8 +228,8 @@ describe('ADMIN_ROLES', () => {
 
 
 describe('ADMIN_PERMISSIONS', () => {
-  it('has exactly 9 entries', () => {
-    expect(ADMIN_PERMISSIONS).toHaveLength(9);
+  it('has exactly 8 entries', () => {
+    expect(ADMIN_PERMISSIONS).toHaveLength(8);
   });
 
   it('includes admin.access', () => {
@@ -241,8 +240,8 @@ describe('ADMIN_PERMISSIONS', () => {
     expect(ADMIN_PERMISSIONS).toContain('admin.users.manage');
   });
 
-  it('includes admin.users.moderate', () => {
-    expect(ADMIN_PERMISSIONS).toContain('admin.users.moderate');
+  it('does not include the dead admin.users.moderate string (TIN-2435)', () => {
+    expect(ADMIN_PERMISSIONS).not.toContain('admin.users.moderate');
   });
 
   it('includes admin.content.manage', () => {
diff --git a/tests/vocabulary-alignment.test.ts b/tests/vocabulary-alignment.test.ts
new file mode 100644
index 0000000..6f0c29c
--- /dev/null
+++ b/tests/vocabulary-alignment.test.ts
@@ -0,0 +1,66 @@
+import { describe, it, expect } from 'vitest';
+import { ADMIN_ROLES, ADMIN_PERMISSIONS } from '../src/index.js';
+
+// TIN-2435: ADMIN_ROLES and ADMIN_PERMISSIONS in this package must never
+// drift from the ratified vocabulary in @tummycrypt/tinyland-auth v0.4.0.
+// This package cannot import runtime values from @tummycrypt/tinyland-auth
+// outside the Bazel module graph (it is only linked as a Bazel npm_link
+// dependency, not an npm dependency of this package -- see MODULE.bazel /
+// BUILD.bazel), so the authority's ADMIN_ROLES is transcribed here by hand
+// from tinyland-auth src/types/auth.ts as of v0.4.0. If tinyland-auth's
+// role vocabulary changes, this transcription -- and ADMIN_ROLES above --
+// must be updated together.
+const AUTH_ADMIN_ROLES_V0_4_0 = [
+  'super_admin',
+  'admin',
+  'moderator',
+  'editor',
+  'event_manager',
+  'contributor',
+  'member',
+  'viewer',
+];
+
+describe('vocabulary alignment with @tummycrypt/tinyland-auth v0.4.0 (TIN-2435)', () => {
+  it('ADMIN_ROLES matches the authority ADMIN_ROLES exactly (8 roles, includes member)', () => {
+    expect([...ADMIN_ROLES].sort()).toEqual([...AUTH_ADMIN_ROLES_V0_4_0].sort());
+    expect(ADMIN_ROLES).toHaveLength(8);
+    expect(ADMIN_ROLES).toContain('member');
+  });
+
+  it('ADMIN_PERMISSIONS contains no dead strings absent from the authority vocabulary', () => {
+    // The authority's 21-permission set (src/types/permissions.ts
+    // AdminPermission in tinyland-auth). This package validates a subset;
+    // every entry here must also be a member of the authority set.
+    const AUTHORITY_PERMISSIONS = [
+      'admin.access',
+      'admin.users.view',
+      'admin.users.manage',
+      'admin.users.delete',
+      'admin.content.view',
+      'admin.content.publish',
+      'admin.content.media_create',
+      'admin.content.manage',
+      'admin.content.moderate',
+      'admin.content.delete',
+      'admin.events.view',
+      'admin.events.manage',
+      'admin.events.delete',
+      'admin.analytics.view',
+      'admin.analytics.export',
+      'admin.settings.view',
+      'admin.settings.manage',
+      'admin.security.view',
+      'admin.security.manage',
+      'admin.logs.view',
+      'admin.logs.export',
+    ];
+
+    for (const perm of ADMIN_PERMISSIONS) {
+      expect(AUTHORITY_PERMISSIONS).toContain(perm);
+    }
+
+    // The dead string dropped by TIN-2435 must not reappear.
+    expect(ADMIN_PERMISSIONS).not.toContain('admin.users.moderate');
+  });
+});