diff --git a/lib/gds_api/test_helpers/email_alert_api.rb b/lib/gds_api/test_helpers/email_alert_api.rb
index b3a8e4fc..609d9353 100644
--- a/lib/gds_api/test_helpers/email_alert_api.rb
+++ b/lib/gds_api/test_helpers/email_alert_api.rb
@@ -557,6 +557,7 @@ def build_subscriber_lists_url(attributes = nil)
         if attributes
           tags = attributes["tags"]
           links = attributes["links"]
+          content_id = attributes["content_id"]
           document_type = attributes["document_type"]
           email_document_supertype = attributes["email_document_supertype"]
           government_document_supertype = attributes["government_document_supertype"]
@@ -566,6 +567,7 @@ def build_subscriber_lists_url(attributes = nil)
           params = {}
           params[:tags] = tags if tags
           params[:links] = links if links
+          params[:content_id] = content_id if content_id
           params[:document_type] = document_type if document_type
           params[:email_document_supertype] = email_document_supertype if email_document_supertype
           params[:government_document_supertype] = government_document_supertype if government_document_supertype