diff --git a/config/application.rb b/config/application.rb
index 0203fffb59..11e8cf12b8 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -226,7 +226,7 @@ module Openfoodnetwork
     config.active_record.belongs_to_required_by_default = false
     config.active_record.cache_versioning = false
     config.active_record.has_many_inversing = false
-    config.active_record.yaml_column_permitted_classes = [BigDecimal]
+    config.active_record.yaml_column_permitted_classes = [BigDecimal, Symbol]
 
     config.active_support.escape_html_entities_in_json = true