diff --git a/src/Rx.KitchenSink.ts b/src/Rx.KitchenSink.ts
index eadbe64436..99cfc51337 100644
--- a/src/Rx.KitchenSink.ts
+++ b/src/Rx.KitchenSink.ts
@@ -87,6 +87,7 @@ import './add/operator/inspectTime';
 import './add/operator/isEmpty';
 import './add/operator/every';
 import './add/operator/last';
+import './add/operator/let';
 import './add/operator/map';
 import './add/operator/mapTo';
 import './add/operator/materialize';