diff --git a/README.md b/README.md
index 33ecdfbf..2de8275d 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 Github clone. You can install portable github system into Unix/Linux.
 
-See GitPrep example site. [GitPrep example site](http://perlcodesample.sakura.ne.jp/gitprep/gitprep.cgi/kimoto/gitprep)
+See GitPrep example site. [GitPrep example site](https://perlcodesample.sakura.ne.jp/gitprep/gitprep.cgi/kimoto/gitprep)
 
 ![GitPrep Image](gitprep_image.png "Gitprep image example")
 
@@ -121,7 +121,7 @@ You can stop the application by adding the **--stop** option.
 
 You can run GitPrep as CGI script as the following site.
 
-[GitPrep example site](http://perlcodesample.sakura.ne.jp/gitprep/gitprep.cgi/kimoto/gitprep)
+[GitPrep example site](https://perlcodesample.sakura.ne.jp/gitprep/gitprep.cgi/kimoto/gitprep)
 
 This is shared server. I assume you can connect the server via SSH and login with your own user.
 
diff --git a/gitprep-site/index.html b/gitprep-site/index.html
index 283b7093..36522192 100644
--- a/gitprep-site/index.html
+++ b/gitprep-site/index.html
@@ -133,7 +133,7 @@
     <a href=".">GitPrep</a>
   </div>
   <div id="gitprepbar-links">
-    <a href="http://perlcodesample.sakura.ne.jp/gitprep/gitprep.cgi">Example</a>
+    <a href="https://perlcodesample.sakura.ne.jp/gitprep/gitprep.cgi/kimoto/gitprep">Example</a>
     <a href="https://github.com/yuki-kimoto/gitprep/archive/latest.zip">Download</a>
     <a href="https://github.com/yuki-kimoto/gitprep">Repository & Documentation</a>
     <a href="http://twitter.com/yukikimoto2">Twitter</a>