diff --git a/src/components/Articles.astro b/src/components/Articles.astro
index 4a7da4f..7ad188e 100644
--- a/src/components/Articles.astro
+++ b/src/components/Articles.astro
@@ -66,7 +66,7 @@ const qiitaData: QiitaArticle[] = await ofetch<QiitaContent>("https://qiita.com/
     return JSON.parse(res).map((article) => {return {site: "qiita", ...article}});
   },
 });
-const combinedData: (ZennArticle | NoteArticle | QiitaArticle)[] = zennData + noteData + qiitaData;
+const combinedData: (ZennArticle | NoteArticle | QiitaArticle)[] = [...zennData, ...noteData, ...qiitaData];
 const compareDates = (a: { published_at: string } | { publish_at: string } | { created_at: string},
                       b: { published_at: string } | { publish_at: string } | { created_at: string},
   ): number => {