diff --git a/views/misc/guestbook.pug b/views/misc/guestbook.pug
index ea5d9f3..602712c 100644
--- a/views/misc/guestbook.pug
+++ b/views/misc/guestbook.pug
@@ -42,7 +42,7 @@ block content
                                     }
                                     c.appendChild(b)
                                 };
-                                loadJs("http://changyan.sohu.com/upload/changyan.js", function () {
+                                loadJs("https://changyan.sohu.com/upload/changyan.js", function () {
                                     window.changyan.api.config({
                                         appid: appid, conf: conf
                                     })