diff --git a/config/initializers/extends.rb b/config/initializers/extends.rb
index a85443cbce..c8bf791080 100644
--- a/config/initializers/extends.rb
+++ b/config/initializers/extends.rb
@@ -4,4 +4,6 @@
 require "extends/cells/decidim/content_blocks/hero_cell_extends"
 require "extends/uploaders/decidim/application_uploader_extends"
 require "extends/lib/decidim/proposals/imports/proposal_answer_creator_extends"
+
+require "decidim/exporters/serializer"
 require "extends/lib/decidim/forms/user_answers_serializer_extend"