diff --git a/modules/waterfall/Batcher.js b/modules/waterfall/Batcher.js
index 017a58000c4d67..1b0e8c21716f46 100644
--- a/modules/waterfall/Batcher.js
+++ b/modules/waterfall/Batcher.js
@@ -1,4 +1,4 @@
-// Inspired by https://caolan.github.io/async/docs.html#cargo
+// Inspired by https://caolan.github.io/async/v3/docs.html#cargo
 // The main difference is that we have a timeout.
 class Batcher {
   pendingEntries = [];