diff --git a/examples/v4/customize_style.html b/examples/v4/customize_style.html
index c447cea1..97210142 100644
--- a/examples/v4/customize_style.html
+++ b/examples/v4/customize_style.html
@@ -249,7 +249,7 @@
     }
 
     fontsElement.options.length = 0;
-    request('http://webdemoapi.myscript.com/api/v4.0/iink/font/google/language/' + currentLanguage)
+    request('https://webdemoapi.myscript.com/api/v4.0/iink/font/google/language/' + currentLanguage)
       .then(function(e) {
         res = JSON.parse(e.target.responseText).result;
         Object.keys(res).forEach(function (index) {