diff --git a/docs/source/settings.rst b/docs/source/settings.rst
index 9b2f1763..077746ea 100644
--- a/docs/source/settings.rst
+++ b/docs/source/settings.rst
@@ -293,6 +293,16 @@ speed up server boot times. Although, if you defer application loading
 to each worker process, you can reload your application code easily by
 restarting workers.
 
+sendfile
+~~~~~~~~
+
+* ``--sendfile``
+* ``True``
+
+Enables or disables the use of ``sendfile()``.
+
+.. versionadded:: 19.2
+
 chdir
 ~~~~~
 
diff --git a/gunicorn/config.py b/gunicorn/config.py
index d898ce83..387b8c9d 100644
--- a/gunicorn/config.py
+++ b/gunicorn/config.py
@@ -824,7 +824,9 @@ class Sendfile(Setting):
     action = "store_true"
     default = True
     desc = """\
-        Enables or disables the use of sendfile().
+        Enables or disables the use of ``sendfile()``.
+
+        .. versionadded:: 19.2
         """
 
 class Chdir(Setting):