diff --git a/src/append_to_group.ts b/src/append_to_group.ts
index e7e2b64..1848a0d 100644
--- a/src/append_to_group.ts
+++ b/src/append_to_group.ts
@@ -3,7 +3,7 @@ import { CsvEntry } from '../type.ts';
 import { toLogin } from '../utils.ts';
 
 async function addUsersToGroup(redmine: Redmine, csv: CsvEntry[]) {
-	const users: { id: number; login: string }[] = []
+	const users: Redmine['users']['List']['Result']['users'] = []
 
 	for (const { firstname, lastname } of csv) {
 		const login = toLogin(firstname, lastname)