diff --git a/doc/source/zuul.rst b/doc/source/zuul.rst
index 98e4bb8..07b777a 100644
--- a/doc/source/zuul.rst
+++ b/doc/source/zuul.rst
@@ -49,6 +49,11 @@
   Port on which the Gearman server is listening.
   ``port=4730``
 
+**check_job_registration**
+  Check to see if job is registered with Gearman or not. When True
+  a build result of NOT_REGISTERED will be return if job is not found.
+  ``check_job_registration=True``
+
 gearman_server
 """"""""""""""