diff --git a/docs/ref/contrib/contenttypes.txt b/docs/ref/contrib/contenttypes.txt
index 0226435..3613e1a 100644
--- a/docs/ref/contrib/contenttypes.txt
+++ b/docs/ref/contrib/contenttypes.txt
@@ -187,6 +187,12 @@ The ``ContentTypeManager``
         probably won't ever need to call this method yourself; Django will call
         it automatically when it's needed.
 
+    .. method:: get_for_id(id)
+
+        Lookup a ContentType by ID. Since this method uses the same shared
+        cache as ``get_for_model``, it's preferred to use this method over
+        ``ContentType.objects.get(pk=id)``
+
     .. method:: get_for_model(model[, for_concrete_model=True])
 
         Takes either a model class or an instance of a model, and returns the