diff --git a/doc/config.rst b/doc/config.rst
index 0219a9ee0..e98e73824 100644
--- a/doc/config.rst
+++ b/doc/config.rst
@@ -873,6 +873,7 @@ that use Sphinx's HTMLWriter class.
    * ``es`` -- Spanish
    * ``sv`` -- Swedish
    * ``tr`` -- Turkish
+   * ``zh`` -- Chinese
 
    .. admonition:: Accelerating build speed
 
@@ -907,6 +908,12 @@ that use Sphinx's HTMLWriter class.
 
    .. versionadded:: 1.1
 
+
+   The Chinese support has these options:
+
+   * ``dict``  -- the ``jieba`` dictionary path if want to use
+     custom dictionary.
+
 .. confval:: html_search_scorer
 
    The name of a JavaScript file (relative to the configuration directory) that