diff --git a/libraries/common/streams/main.js b/libraries/common/streams/main.js
index <HASH>..<HASH> 100644
--- a/libraries/common/streams/main.js
+++ b/libraries/common/streams/main.js
@@ -4,6 +4,7 @@ import 'rxjs/add/operator/filter';
 import 'rxjs/add/operator/first';
 import 'rxjs/add/operator/map';
 import 'rxjs/add/operator/merge';
+import 'rxjs/add/operator/mergeMap';
 import 'rxjs/add/operator/delay';
 import 'rxjs/add/operator/zip';
 import 'rxjs/add/operator/do';
PWA-<I>: Added rxjs operator `mergeMap` to the main stream.