diff --git a/fern/apis/api/generators.yml b/fern/apis/api/generators.yml
index 5ffe183d7..86a0d53ef 100644
--- a/fern/apis/api/generators.yml
+++ b/fern/apis/api/generators.yml
@@ -44,6 +44,7 @@ groups:
           skipResponseValidation: true
           includeApiReference: true
           noSerdeLayer: true
+          omitUndefined: true
         smart-casing: true
   java-sdk:
     generators: