diff --git a/config/initializers/zeitwerk.rb b/config/initializers/zeitwerk.rb
index b7329c94a..c31c6207f 100644
--- a/config/initializers/zeitwerk.rb
+++ b/config/initializers/zeitwerk.rb
@@ -16,6 +16,7 @@
     "dclp_text_identifier_helper" => "DCLPTextIdentifierHelper",
     "apis_identifier" => "APISIdentifier",
     "apis_identifier_helper" => "APISIdentifierHelper",
+    "numbers_rdf" => "NumbersRDF",
     "jruby_xml" => "JRubyXML"
   )
 end