diff --git a/api/classes/systemmanager.rst b/api/classes/systemmanager.rst
index 15c070b..bd48b09 100644
--- a/api/classes/systemmanager.rst
+++ b/api/classes/systemmanager.rst
@@ -19,7 +19,7 @@ The systemmanager class is used to retrieve information about the system. Every
 |                                 |               |                                                                                                                      |
 +---------------------------------+---------------+----------------------------------------------------------------------------------------------------------------------+
 | action                          |               | supported actions include "memorystats", "cpupercentage", "cputemps", "procinfo", "killproc", "batteryinfo",         |
-|                                 |               | "externalmounts", "systemmanager", and "sysctllist"                                                                  |
+|                                 |               | "externalmounts", "systemmanager", "sysctllist", and "setsysctl"                                                     |
 |                                 |               |                                                                                                                      |
 +---------------------------------+---------------+----------------------------------------------------------------------------------------------------------------------+
 
@@ -658,4 +658,70 @@ The "sysctllist" action lists returns the list of all setable sysctl values. Sin
   "id": "fooid",
   "name": "response",
   "namespace": "sysadm"
+ }
+ 
+.. index:: setsysctl, systemmanager
+
+.. _Set a Sysctl:
+
+Set a Sysctl
+============
+
+The "setsysctl" action sets the specified setable sysctl to the specified value. The response indicates that the old value was changed to the new value.
+
+**REST Request**
+
+.. code-block:: json
+
+ PUT /sysadm/systemmanager
+ {
+   "value" : "0",
+   "sysctl" : "security.jail.mount_devfs_allowed",
+   "action" : "setsysctl"
+ }
+
+**REST Response**
+
+.. code-block:: json
+
+ {
+    "args": {
+        "setsysctl": {
+            "response": "security.jail.mount_devfs_allowed: 1 -> 0",
+            "sysctl": "security.jail.mount_devfs_allowed",
+            "value": "0"
+        }
+    }
+ }
+
+**WebSocket Request**
+
+.. code-block:: json
+
+ {
+   "args" : {
+      "value" : "0",
+      "action" : "setsysctl",
+      "sysctl" : "security.jail.mount_devfs_allowed"
+   },
+   "name" : "systemmanager",
+   "namespace" : "sysadm",
+   "id" : "fooid"
+ }
+
+**WebSocket Response**
+
+.. code-block:: json
+
+ {
+  "args": {
+    "setsysctl": {
+      "response": "security.jail.mount_devfs_allowed: 1 -> 0",
+      "sysctl": "security.jail.mount_devfs_allowed",
+      "value": "0"
+    }
+  },
+  "id": "fooid",
+  "name": "response",
+  "namespace": "sysadm"
  }
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