diff --git a/lib/hello_sign/api/unclaimed_draft.rb b/lib/hello_sign/api/unclaimed_draft.rb
index aeae572..ebea50e 100644
--- a/lib/hello_sign/api/unclaimed_draft.rb
+++ b/lib/hello_sign/api/unclaimed_draft.rb
@@ -167,6 +167,7 @@ def create_unclaimed_draft opts
       def create_embedded_unclaimed_draft(opts)
         opts[:client_id] ||= self.client_id
         prepare_files opts
+        prepare_form_fields opts
         prepare_custom_fields opts
 
         if opts[:type] == 'request_signature' || opts[:type] == 'send_document'
diff --git a/lib/hello_sign/version.rb b/lib/hello_sign/version.rb
index 8ac8102..a70d0bb 100644
--- a/lib/hello_sign/version.rb
+++ b/lib/hello_sign/version.rb
@@ -23,5 +23,5 @@
 #
 
 module HelloSign
-  VERSION = '3.7.3'
+  VERSION = '3.7.4'
 end