diff --git a/apps/admin-web/src/api/adminApiTypes.ts b/apps/admin-web/src/api/adminApiTypes.ts
index 4e263d322..2444b9ad2 100644
--- a/apps/admin-web/src/api/adminApiTypes.ts
+++ b/apps/admin-web/src/api/adminApiTypes.ts
@@ -975,7 +975,7 @@ export interface AdminRechargeRefundHoldPayload {
 
 export interface AdminMembershipOrderChangePayload {
   /** `purchase`（新购）或 `upgrade`（补差升级）。 */
-  changeKind: 'purchase' | 'upgrade' | string;
+  changeKind: 'purchase' | 'upgrade';
   planBefore?: ProfileMembershipPlan | null;
   planAfter?: ProfileMembershipPlan | null;
   cycleKindBefore?: ProfileMembershipCycleKind | null;