diff --git a/docs/labs.md b/docs/labs.md
index 887ce93d5..3dff4474c 100644
--- a/docs/labs.md
+++ b/docs/labs.md
@@ -130,3 +130,8 @@ An in-progress implementation of [MSC2516](https://github.com/matrix-org/matrix-
 [voice messages](https://github.com/vector-im/element-web/issues/1358) to Element. Note that this feature
 is currently under active development and therefore is entirely incomplete and may not work at all - it
 is not recommended for general use at this time.
+
+## Do not disturb (`feature_dnd`)
+
+Enables UI for turning on "do not disturb" mode for the current device. When DND mode is engaged, popups
+and notification noises are suppressed. Not perfect, but can help reduce noise.