diff --git a/docs/ref/contrib/postgres/fields.txt b/docs/ref/contrib/postgres/fields.txt
index f753f3b75e..5a79d8879d 100644
--- a/docs/ref/contrib/postgres/fields.txt
+++ b/docs/ref/contrib/postgres/fields.txt
@@ -718,14 +718,11 @@ operators ``@>``, ``<@``, and ``&&`` respectively.
     >>> Event.objects.filter(ages__contained_by=NumericRange(0, 15))
     <QuerySet [<Event: Soft play>]>
 
-.. versionadded 1.9
-
-    The `contained_by` lookup is also available on the non-range field types:
-    :class:`~django.db.models.fields.IntegerField`,
-    :class:`~django.db.models.fields.BigIntegerField`,
-    :class:`~django.db.models.fields.FloatField`,
-    :class:`~django.db.models.fields.DateField`, and
-    :class:`~django.db.models.fields.DateTimeField`. For example::
+The ``contained_by`` lookup is also available on the non-range field types:
+:class:`~django.db.models.IntegerField`,
+:class:`~django.db.models.BigIntegerField`,
+:class:`~django.db.models.FloatField`, :class:`~django.db.models.DateField`,
+and :class:`~django.db.models.DateTimeField`. For example::
 
     >>> from psycopg2.extras import DateTimeTZRange
     >>> Event.objects.filter(start__contained_by=DateTimeTZRange(
diff --git a/docs/ref/utils.txt b/docs/ref/utils.txt
index 320f5db795..18561781c1 100644
--- a/docs/ref/utils.txt
+++ b/docs/ref/utils.txt
@@ -75,11 +75,6 @@ need to distinguish caches by the ``Accept-language`` header.
     Adds a ``Cache-Control: max-age=0, no-cache, no-store, must-revalidate``
     header to a response to indicate that a page should never be cached.
 
-    .. versionchanged:: 1.8.8
-
-        In older versions, ``Cache-Control: max-age=0`` was sent. This didn't
-        reliably prevent caching in all browsers.
-
 .. function:: patch_vary_headers(response, newheaders)
 
     Adds (or updates) the ``Vary`` header in the given ``HttpResponse`` object.