diff --git a/crates/web-sys/webidls/enabled/RTCDataChannel.webidl b/crates/web-sys/webidls/enabled/RTCDataChannel.webidl
index 016a9da326a..787208eb230 100644
--- a/crates/web-sys/webidls/enabled/RTCDataChannel.webidl
+++ b/crates/web-sys/webidls/enabled/RTCDataChannel.webidl
@@ -17,6 +17,7 @@ enum RTCDataChannelType {
 interface RTCDataChannel : EventTarget
 {
   readonly attribute DOMString label;
+  readonly attribute unsigned short id;
   readonly attribute boolean reliable;
   readonly attribute unsigned short? maxPacketLifeTime;
   readonly attribute unsigned short? maxRetransmits;