diff --git a/app/models/build_list.rb b/app/models/build_list.rb
index 0f8b8cade..3a513161b 100644
--- a/app/models/build_list.rb
+++ b/app/models/build_list.rb
@@ -280,6 +280,20 @@ class BuildList < ActiveRecord::Base
     build_started? || build_pending?
   end
 
+  def can_auto_publish?
+    return false if !(auto_publish? && can_publish?)
+
+    if last_bl = last_published.last
+      return true if last_bl.source_packages.count != source_packages.count
+      last_bl.source_packages.each do |sp|
+        return true if source_packages.find{ |nsp| nsp.name == sp.name && nsp.version > sp.version }
+      end
+    else
+      return true # no published packages
+    end
+    return false # no new packages
+  end
+
   def can_publish?
     [SUCCESS, FAILED_PUBLISH, BUILD_PUBLISHED, TESTS_FAILED].include?(status) && extra_build_lists_published? && save_to_repository.projects.exists?(:id => project_id)
   end
diff --git a/lib/abf_worker/rpm_worker_observer.rb b/lib/abf_worker/rpm_worker_observer.rb
index bc128adfc..eebe2f669 100644
--- a/lib/abf_worker/rpm_worker_observer.rb
+++ b/lib/abf_worker/rpm_worker_observer.rb
@@ -17,7 +17,7 @@ module AbfWorker
       case status
       when COMPLETED
         subject.build_success
-        subject.now_publish if subject.auto_publish? && subject.can_publish?
+        subject.now_publish if subject.can_auto_publish?
       when FAILED
         subject.build_error
         item.update_attributes({:status => BuildList::BUILD_ERROR})