diff --git a/app/views/articles/tags/_sidebar.html.erb b/app/views/articles/tags/_sidebar.html.erb
index 044f3febf..656482a03 100644
--- a/app/views/articles/tags/_sidebar.html.erb
+++ b/app/views/articles/tags/_sidebar.html.erb
@@ -1,4 +1,4 @@
-<% cache "tag-sidebar-#{@tag}-#{@tag_model&.updated_at}-#{@tag_model&.taggings_count}", expires_in: 5.hours do %>
+<% cache "tag-sidebar-#{@tag}-#{@tag_model&.updated_at}-#{@tag_model&.taggings_count}-#{user_signed_in?}", expires_in: 5.hours do %>
   <div id="sidebar-wrapper-left" class="sidebar-wrapper sidebar-wrapper-left">
     <div class="sidebar-bg" id="sidebar-bg-left"></div>
     <div class="side-bar">
diff --git a/app/views/pages/robots.text.erb b/app/views/pages/robots.text.erb
index fae5d9900..c90844264 100644
--- a/app/views/pages/robots.text.erb
+++ b/app/views/pages/robots.text.erb
@@ -6,5 +6,7 @@ Disallow: /connect/@*
 Disallow: /search?q=*
 Disallow: /search/?q=*
 Disallow: /listings*?q=*
+Disallow: /mod/*
+Disallow: /mod?*
 
 Sitemap: https://<%= ApplicationConfig["AWS_BUCKET_NAME"] %>.s3.amazonaws.com/sitemaps/sitemap.xml.gz