diff --git a/docs/interfaces/http-api.md b/docs/interfaces/http-api.md
index bfba2222c..b7e2240b9 100644
--- a/docs/interfaces/http-api.md
+++ b/docs/interfaces/http-api.md
@@ -136,6 +136,7 @@ It is highly recommended to use the [JSON API](/interfaces/json-api) when dealin
 &IT | none | Include UI color theme in API response | 0.8.2
 &RD= | 0 or 1 | Toggle realtime UDP | 0.8.4
 &LO= | 0-2 | Live data override. 0 is off, 1 is override until live data ends, 2 is override until ESP reboot | 0.10.2
+&NP | none | Advance to the next preset in a playlist | 0.15
 
 ## XML response
 
diff --git a/docs/interfaces/json-api.md b/docs/interfaces/json-api.md
index f8877130d..1628d78e1 100644
--- a/docs/interfaces/json-api.md
+++ b/docs/interfaces/json-api.md
@@ -163,6 +163,7 @@ playlist | object | [Custom preset playlists](#playlists). Not included in state
 tb | uint32 | Sets timebase for effects. Not reported.
 ledmap | 0 to 9 | Load specified ledmap (0 for `ledmap.json`, 1-9 for `ledmap1.json` to `ledmap9.json`). [See mapping](/advanced/mapping/). Not included in state response. _(available since 0.14.0)_
 rmcpal | bool | Remove last custom palette if set to `true`. Not included in state response. _(available since 0.14.0)_
+np | bool | Advance to the next preset in a playlist if set to `true`. Not included in state response. _(available since 0.15)_
 
 #### Contents of the segment object