diff --git a/docs/cdn.md b/docs/cdn.md
index 82b2d2d90..05fff3c28 100644
--- a/docs/cdn.md
+++ b/docs/cdn.md
@@ -44,7 +44,7 @@ Alternatively, use [compressed files](#compressed-file).
 
 ## Other CDN
 
-- http://www.bootcdn.cn/docsify
+- https://www.bootcdn.cn/docsify/
 - https://cdn.jsdelivr.net/npm/docsify/
 - https://cdnjs.com/libraries/docsify
-
+- https://unpkg.com/browse/docsify/