diff --git a/rst/modules.rst b/rst/modules.rst
index 1012fd1fe4..82d80cd024 100644
--- a/rst/modules.rst
+++ b/rst/modules.rst
@@ -283,6 +283,11 @@ Adds or removes groups.
 
 * either 'absent', or 'present'.  'present' is the default.
 
+*system*:
+
+* (new in 0.4) Indicates the group (when being created), should be a system group.  This does not allow changing groups from and to system groups.
+
+
 To control members of the group, see the users resource.
 
 Example action from Ansible :doc:`playbooks`::
@@ -569,6 +574,10 @@ Creates user accounts, manipulates existing user accounts, and removes user acco
 
 * Defaults to 'present'.  When 'absent', the user account will be removed if present.  Optionally additional removal behaviors can be set with the 'force' or 'remove' parameter values (see below).
 
+*system*:
+
+* (new in 0.4) Indicates the user (when being created), should be a system account.  This does not allow changing users from and to system accounts.
+
 *force*:
 
 * When used with a state of 'absent', the behavior denoted in the 'userdel' manpage for ``--force`` is also used when removing the user.  Value is 'yes' or 'no', default is 'no'.