diff --git a/doc/help/settings.asciidoc b/doc/help/settings.asciidoc
index a5dad907e..edb60aa34 100644
--- a/doc/help/settings.asciidoc
+++ b/doc/help/settings.asciidoc
@@ -143,6 +143,7 @@
 |<<content.local_content_can_access_remote_urls,content.local_content_can_access_remote_urls>>|Allow locally loaded documents to access remote URLs.
 |<<content.local_storage,content.local_storage>>|Enable support for HTML 5 local storage and Web SQL.
 |<<content.media_capture,content.media_capture>>|Allow websites to record audio/video.
+|<<content.mouse_lock,content.mouse_lock>>|Allow websites to lock your mouse pointer.
 |<<content.netrc_file,content.netrc_file>>|Netrc-file for HTTP authentication.
 |<<content.notifications,content.notifications>>|Allow websites to show notifications.
 |<<content.pdfjs,content.pdfjs>>|Allow pdf.js to view PDF files in the browser.
@@ -1872,6 +1873,26 @@ Default: +pass:[ask]+
 
 This setting is only available with the QtWebEngine backend.
 
+[[content.mouse_lock]]
+=== content.mouse_lock
+Allow websites to lock your mouse pointer.
+
+This setting supports URL patterns.
+
+Type: <<types,BoolAsk>>
+
+Valid values:
+
+ * +true+
+ * +false+
+ * +ask+
+
+Default: +pass:[ask]+
+
+On QtWebEngine, this setting requires Qt 5.8 or newer.
+
+On QtWebKit, this setting is unavailable.
+
 [[content.netrc_file]]
 === content.netrc_file
 Netrc-file for HTTP authentication.