diff --git a/src/resources/Entity/Connect.ts b/src/resources/Entity/Connect.ts
index 24ac9ac..92aee55 100644
--- a/src/resources/Entity/Connect.ts
+++ b/src/resources/Entity/Connect.ts
@@ -2,6 +2,7 @@ import Resource, { IResourceListOpts } from '../../resource';
 import Configuration, { IResponse } from '../../configuration';
 import type { IEntityConnect } from './types';
 
+
 export const AccountExpandableFields = {
   sensitive: 'sensitive',
   balance: 'balance',
@@ -14,10 +15,12 @@ export const AccountExpandableFields = {
   latest_verification_session: 'latest_verification_session',
 } as const;
 
-type AccountExpandableField = typeof AccountExpandableFields[keyof typeof AccountExpandableFields];
+type AccountFieldKey = typeof AccountExpandableFields[keyof typeof AccountExpandableFields];
+
+export type ExpandField = 'accounts' | `accounts.${AccountFieldKey}`;
 
 export interface IExpandableOpts {
-  expand?: AccountExpandableField[];
+  expand?: ExpandField[];
 }
 
 export interface IConnectListOpts extends IResourceListOpts, IExpandableOpts {}
diff --git a/test/resources/Account.tests.ts b/test/resources/Account.tests.ts
index 8ce8f7a..5ed2bb3 100644
--- a/test/resources/Account.tests.ts
+++ b/test/resources/Account.tests.ts
@@ -239,6 +239,7 @@ describe('Accounts - core methods tests', () => {
       };
 
       balances_create_response.should.be.eql(expect_results);
+      await new Promise(r => setTimeout(r, 5000))
     });
 
     it('should successfully retrieve the balance of an account.', async () => {
@@ -311,7 +312,7 @@ describe('Accounts - core methods tests', () => {
         };
 
       card_create_response.should.be.eql(expect_results);
-      await new Promise(r => setTimeout(r, 2000))
+      await new Promise(r => setTimeout(r, 5000))
     });
 
     it('should successfully retrieve a card for an account.', async () => {