diff --git a/lib/routes/zhihu/zhuanlan.js b/lib/routes/zhihu/zhuanlan.js
index afe3a1ae7f..6c5479b773 100644
--- a/lib/routes/zhihu/zhuanlan.js
+++ b/lib/routes/zhihu/zhuanlan.js
@@ -39,6 +39,7 @@ module.exports = async (ctx) => {
             const item = {
                 title: article.title,
                 description: '',
+                pubDate: new Date(article.updated * 1000).toUTCString(),
                 link: article.url,
             };
             const key = 'zhuanlan' + article.url;