diff --git a/src/utils/app-bridge/AppBridge.ts b/src/utils/app-bridge/AppBridge.ts
index 707a88e49..9c7c2b1d7 100644
--- a/src/utils/app-bridge/AppBridge.ts
+++ b/src/utils/app-bridge/AppBridge.ts
@@ -19,6 +19,7 @@ export interface IAppBridgeOpenEvent {
     entityType: string;
     entityId?: string;
     data?: any;
+    passthrough?: string;
 }
 
 const HTTP_VERBS = {