diff --git a/scrapy/selector/unified.py b/scrapy/selector/unified.py
index aa9581fcd..e852aadc7 100644
--- a/scrapy/selector/unified.py
+++ b/scrapy/selector/unified.py
@@ -47,7 +47,7 @@ class Selector(_ParselSelector, object_ref):
     ``response`` isn't available. Using ``text`` and ``response`` together is
     undefined behavior.
 
-    ``type`` defines the selector type, it can be ``"html"``, ``"xml"``
+    ``type`` defines the selector type, it can be ``"html"``, ``"xml"``, ``"json"``
     or ``None`` (default).
 
     If ``type`` is ``None``, the selector automatically chooses the best type