diff --git a/scrapy/selector/unified.py b/scrapy/selector/unified.py
index 9e11de406..5ad4724c0 100644
--- a/scrapy/selector/unified.py
+++ b/scrapy/selector/unified.py
@@ -46,7 +46,7 @@ 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