diff --git a/app/controllers/api/shrimpos_controller.rb b/app/controllers/api/shrimpos_controller.rb
index 0605a686..6d5720c3 100644
--- a/app/controllers/api/shrimpos_controller.rb
+++ b/app/controllers/api/shrimpos_controller.rb
@@ -24,7 +24,7 @@ def create
 
   def show
     shrimpo = Shrimpo.friendly.find params[:id]
-    render json: shrimpo, include: ['shrimpo_entries', 'posts', 'shrimpo_entries.trophy_awards', 'shrimpo_voting_categories']
+    render json: shrimpo, serializer: ShrimpoSerializer, current_user: current_user, include: ['shrimpo_entries', 'posts', 'shrimpo_entries.trophy_awards', 'shrimpo_voting_categories']
   end
 
   private
diff --git a/app/serializers/shrimpo_serializer.rb b/app/serializers/shrimpo_serializer.rb
index fb9331f5..2fbfd0c6 100644
--- a/app/serializers/shrimpo_serializer.rb
+++ b/app/serializers/shrimpo_serializer.rb
@@ -1,9 +1,13 @@
 class ShrimpoSerializer < ActiveModel::Serializer
-  attributes :title, :rule_pack, :start_at, :end_at, :status, :zip_file_url, :shrimpo_entries, :slug, :emoji, :cover_art_url, :ended_at, :duration, :username, :user_avatar, :entries_count, :entries_zip_file_url, :shrimpo_type
+  attributes :title, :rule_pack, :start_at, :end_at, :status, :zip_file_url, :shrimpo_entries, :slug, :emoji, :cover_art_url, :ended_at, :duration, :username, :user_avatar, :entries_count, :entries_zip_file_url, :shrimpo_type, :voting_completion_percentage
   has_many :shrimpo_entries, embed: :ids, key: :shrimpo_entries, embed_in_root: true, each_serializer: ShrimpoEntrySerializer
   has_many :posts, embed: :ids, key: :posts, embed_in_root: true, each_serializer: PostSerializer
   has_many :shrimpo_voting_categories, embed: :ids, key: :shrimpo_voting_categories, embed_in_root: true, each_serializer: ShrimpoVotingCategorySerializer
 
+  def voting_completion_percentage
+    object.voting_completion instance_options[:current_user]
+  end
+
   def entries_count
     object.shrimpo_entries.count
   end