diff --git a/src/service/foo.d.ts b/src/service/foo.d.ts
index 9dc1b6f..81bc41a 100644
--- a/src/service/foo.d.ts
+++ b/src/service/foo.d.ts
@@ -1,4 +1,4 @@
-export type IFooItem = {
+export interface IFooItem {
   id: string
   name: string
 }