diff --git a/docs/ref/settings.txt b/docs/ref/settings.txt
index 8bdf395fc8..0601e21ab7 100644
--- a/docs/ref/settings.txt
+++ b/docs/ref/settings.txt
@@ -1205,6 +1205,9 @@ SESSION_ENGINE
 
 .. versionadded:: 1.0
 
+.. versionchanged:: 1.1
+   The ``cache_db`` backend was added
+
 Default: ``django.contrib.sessions.backends.db``
 
 Controls where Django stores session data. Valid values are:
@@ -1212,6 +1215,7 @@ Controls where Django stores session data. Valid values are:
     * ``'django.contrib.sessions.backends.db'``
     * ``'django.contrib.sessions.backends.file'``
     * ``'django.contrib.sessions.backends.cache'``
+    * ``'django.contrib.sessions.backends.cache_db'``
 
 See :ref:`topics-http-sessions`.
 
diff --git a/docs/topics/http/sessions.txt b/docs/topics/http/sessions.txt
index cfe53c514b..3354eb7f24 100644
--- a/docs/topics/http/sessions.txt
+++ b/docs/topics/http/sessions.txt
@@ -422,6 +422,9 @@ SESSION_ENGINE
 
 .. versionadded:: 1.0
 
+.. versionchanged:: 1.1
+   The ``cache_db`` backend was added
+
 Default: ``django.contrib.sessions.backends.db``
 
 Controls where Django stores session data. Valid values are:
@@ -429,6 +432,7 @@ Controls where Django stores session data. Valid values are:
     * ``'django.contrib.sessions.backends.db'``
     * ``'django.contrib.sessions.backends.file'``
     * ``'django.contrib.sessions.backends.cache'``
+    * ``'django.contrib.sessions.backends.cache_db'``
 
 See `configuring the session engine`_ for more details.