diff --git a/src/room/GroupCallView.tsx b/src/room/GroupCallView.tsx
index bc513c18..bbd9652e 100644
--- a/src/room/GroupCallView.tsx
+++ b/src/room/GroupCallView.tsx
@@ -217,13 +217,16 @@ export function GroupCallView({
         sendInstantly
       );
 
-      leaveRTCSession(rtcSession);
+      await leaveRTCSession(rtcSession);
       if (widget) {
         // we need to wait until the callEnded event is tracked on posthog.
         // Otherwise the iFrame gets killed before the callEnded event got tracked.
         await new Promise((resolve) => window.setTimeout(resolve, 10)); // 10ms
         widget.api.setAlwaysOnScreen(false);
         PosthogAnalytics.instance.logout();
+
+        // we will always send the hangup event after the memberships have been updated
+        // calling leaveRTCSession.
         widget.api.transport.send(ElementWidgetActions.HangupCall, {});
       }
 
diff --git a/src/rtcSessionHelpers.ts b/src/rtcSessionHelpers.ts
index 3d62f980..3cad5627 100644
--- a/src/rtcSessionHelpers.ts
+++ b/src/rtcSessionHelpers.ts
@@ -47,7 +47,9 @@ export function enterRTCSession(rtcSession: MatrixRTCSession) {
   rtcSession.joinRoomSession([makeFocus(livekitAlias)]);
 }
 
-export function leaveRTCSession(rtcSession: MatrixRTCSession) {
+export async function leaveRTCSession(
+  rtcSession: MatrixRTCSession
+): Promise<void> {
   //groupCallOTelMembership?.onLeaveCall();
-  rtcSession.leaveRoomSession();
+  await rtcSession.leaveRoomSession();
 }