diff --git a/public/app/app.ts b/public/app/app.ts
index 0ccf34f2cf9..33ee97ac4b3 100644
--- a/public/app/app.ts
+++ b/public/app/app.ts
@@ -1,3 +1,4 @@
+import 'symbol-observable';
 import 'core-js/stable';
 import 'regenerator-runtime/runtime';