diff --git a/site/content/tutorial/02-reactivity/04-updating-arrays-and-objects/text.md b/site/content/tutorial/02-reactivity/04-updating-arrays-and-objects/text.md
index c4ff659b9b..750d69ffe9 100644
--- a/site/content/tutorial/02-reactivity/04-updating-arrays-and-objects/text.md
+++ b/site/content/tutorial/02-reactivity/04-updating-arrays-and-objects/text.md
@@ -23,7 +23,7 @@ function addNumber() {
 }
 ```
 
-The same rule applies to array methods such as `pop`, `shift`, `splice` and to objects methods such as `Map.set`.
+The same rule applies to array methods such as `pop`, `shift`, and `splice` and to objects methods such as `Map.set`, `Set.add`, etc.
 
 Assignments to *properties* of arrays and objects — e.g. `obj.foo += 1` or `array[i] = x` — work the same way as assignments to the values themselves.