diff --git a/src/utils.ts b/src/utils.ts
index 141ddde..68293a7 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -6,6 +6,6 @@ export async function getPosts(collection: keyof ContentEntryMap) {
         return data.draft !== true
     })
     return posts.sort((a, b) =>
-        a.data.pubDate && b.data.pubDate ? +b.data.pubDate - +a.data.pubDate : 0
+        a.data.pubDate && b.data.pubDate ? Number(b.data.pubDate) - Number(a.data.pubDate) : 0
     )
 }
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