diff --git a/app/models/metadata_template.rb b/app/models/metadata_template.rb
index 3fc63c8..17775c4 100644
--- a/app/models/metadata_template.rb
+++ b/app/models/metadata_template.rb
@@ -154,7 +154,7 @@ MetadataTemplate = Struct.new(:site, :document, :name, :label, :type,
   end
 
   def allowed_tags
-    @allowed_tags ||= %w[strong em del u mark p h1 h2 h3 h4 h5 h6 ul ol li img iframe audio video div figure figcaption].freeze
+    @allowed_tags ||= %w[strong em del u mark p h1 h2 h3 h4 h5 h6 ul ol li img iframe audio video div figure figcaption a].freeze
   end
 
   # Decifra el valor