diff --git a/src/__tests__/services/admin/admin-auth.test.ts b/src/__tests__/services/admin/admin-auth.test.ts
index 7d0f535..ade1634 100644
--- a/src/__tests__/services/admin/admin-auth.test.ts
+++ b/src/__tests__/services/admin/admin-auth.test.ts
@@ -9,7 +9,7 @@ vi.mock('bcryptjs', () => ({
 
 // Build the mock DB once, then restore individual mocks in beforeEach
 function buildMockDb() {
-  const db: Record<string, Mock> = {};
+  const db: { [K in 'select'|'from'|'where'|'limit'|'update'|'set']: Mock } = {} as typeof db;
   db.select = vi.fn().mockReturnValue(db);
   db.from = vi.fn().mockReturnValue(db);
   db.where = vi.fn().mockReturnValue(db);