diff --git a/lib/get_response/contact.rb b/lib/get_response/contact.rb
index 0f1719a..edda4ae 100644
--- a/lib/get_response/contact.rb
+++ b/lib/get_response/contact.rb
@@ -125,6 +125,7 @@ def customs
     # returns:: Hash
     def customs=(value)
       @customs = parse_customs(value)
+      @connection.send_request("set_contact_customs", { "contact" => @id, "customs" => @customs })["result"]
     end