--- redmine-1.6.1/app/views/admin/plugins.html.erb
+++ redmine/app/views/admin/plugins.html.erb
@@ -25,7 +25,7 @@
e.preventDefault();
$.ajax({
dataType: "jsonp",
- url: "http://www.redmine.org/plugins/check_updates",
+ url: "//www.redmine.org/plugins/check_updates",
data: <%= raw_json plugin_data_for_updates(@plugins) %>,
timeout: 3000,
beforeSend: function(){