diff --git a/app/models/summary.rb b/app/models/summary.rb
index 65fc8b3..a524e53 100644
--- a/app/models/summary.rb
+++ b/app/models/summary.rb
@@ -25,6 +25,10 @@ class Summary
     @ranking ||= Ranking.new(talk_ids: talk_ids).ranking
   end
 
+  def conflicts
+    @conflicts ||= ConflictsSummary.new(talk_ids: talk_ids).conflicts
+  end
+
   private
 
   def least_conflicts_for_single_talk
diff --git a/app/views/summaries/show.json.jbuilder b/app/views/summaries/show.json.jbuilder
index 6f5ae26..9990e5d 100644
--- a/app/views/summaries/show.json.jbuilder
+++ b/app/views/summaries/show.json.jbuilder
@@ -1 +1 @@
-json.extract! @summary, :number_of_ballots, :most_conflicts, :least_conflicts, :ranking
+json.extract! @summary, :number_of_ballots, :most_conflicts, :least_conflicts, :ranking, :conflicts