diff.diff

diff --git a/app/controllers/rss_controller.rb b/app/controllers/rss_controller.rb
index c27e263..88fefb5 100644
--- a/app/controllers/rss_controller.rb
+++ b/app/controllers/rss_controller.rb
@@ -580,6 +580,7 @@ class RssController < BaseCommunityController
 
     def load_feed_filter(filter)
       @feed_title = get_feed_title(filter.title)
+      @feed_updated_at = filter.updated_at.to_time.to_i
       @root_url = url_for(current_community)
       @feed_url = get_feed_url("partner/#{filter.slug}/")
       @feed_body_type = filter.plain_text ? 'text' : 'html'
diff --git a/app/views/rss/feed_filter.xml.builder b/app/views/rss/feed_filter.xml.builder
index ff9c8d0..a8dd1ca 100644
--- a/app/views/rss/feed_filter.xml.builder
+++ b/app/views/rss/feed_filter.xml.builder
@@ -11,7 +11,7 @@ xml.feed("xmlns" => "http://www.w3.org/2005/Atom", "xml:lang" => "en") do
   xml.id(@feed_url)
   xml.link(:type => "text/html", :href => @root_url, :rel => "alternate")
   for e in @entries
-    cache "entry:feed_filter:xml:#{e.id}:#{e.version}",:expires_in=>24.hours do
+    cache "entry:feed_filter:xml:#{e.id}:#{e.version}:#{@feed_updated_at}",:expires_in=>24.hours do
       xml.entry do
         unless e.published_date && e.modified_date
           raise "Bad entry in feed: #{e.inspect}"