diff --git a/gulpfile.js b/gulpfile.js
index afd3237f33a..0c0cc9b9317 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -11,8 +11,8 @@ var v1 = require( './lib/v1.js' );
 
 gulp.task( 'download', function () {
   var urls = [
-    'http://www.post.japanpost.jp/zipcode/dl/roman/ken_all_rome.zip',
-    'http://www.post.japanpost.jp/zipcode/dl/jigyosyo/zip/jigyosyo.zip'
+    'https://www.post.japanpost.jp/zipcode/dl/roman/KEN_ALL_ROME.zip',
+    'https://www.post.japanpost.jp/zipcode/dl/jigyosyo/zip/jigyosyo.zip'
   ];
   return download( urls )
     .pipe( decompress() )