diff --git a/config/initializers/elastic_search.rb b/config/initializers/elastic_search.rb
index 54de782d3..156a6ab1c 100644
--- a/config/initializers/elastic_search.rb
+++ b/config/initializers/elastic_search.rb
@@ -1,4 +1,6 @@
+require 'cgi'
 require 'json'
+require 'uri'
 
 # https://github.com/omniauth/omniauth/issues/872
 Hashie.logger = Logger.new(nil)