diff --git a/src/utils.ts b/src/utils.ts
index f168648..c839127 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -7,7 +7,7 @@ export async function getPosts(collection: keyof ContentEntryMap) {
     });
     return posts.sort((a, b) =>
         a.data.pubDate && b.data.pubDate
-            ? +b.data.pubDate - +a.data.pubDate
+            ? Number(b.data.pubDate) - Number(a.data.pubDate)
             : 0,
     );
 }