diff --git a/announcement.gemspec b/announcement.gemspec
index 3f33f56..638b0f3 100644
--- a/announcement.gemspec
+++ b/announcement.gemspec
@@ -116,9 +116,10 @@ if bundle_update_flag
             update_flag = false
             last_index = widget_info[-1]["filename"].match(/\d+/)[0].to_i rescue nil
             if !last_index.nil?
+              idx_regex = /^(\d+[\. \t]*)|[ \t]+$/
               default_announcement_widget_info.each do |h|
-                name_without_index = h["name"]["zh_tw"].sub(/\d+/,'')
-                widget_info_index = (widget_info.index{|hh| hh["name"]["zh_tw"].include?(name_without_index)} rescue -1)
+                name_without_index = h["name"]["zh_tw"].gsub(idx_regex,'')
+                widget_info_index = (widget_info.index{|hh| hh["name"]["zh_tw"].gsub(idx_regex,'') == name_without_index}||-1 rescue -1)
                 if (widget_info_index == -1 || widget_info_index.nil?)
                   update_flag = true
                   copy_h = h.dup