diff --git a/README.md b/README.md
index 5ebdcd95..f6503646 100644
--- a/README.md
+++ b/README.md
@@ -163,6 +163,8 @@ position 0.
push(Array<Object|boolean|Array|string|number|Uint8Array|Y.Type>)
unshift(Array<Object|boolean|Array|string|number|Uint8Array|Y.Type>)
+
delete(index:number, length:number)
get(index:number)
diff --git a/src/types/YArray.js b/src/types/YArray.js
index 58334df3..171eec8b 100644
--- a/src/types/YArray.js
+++ b/src/types/YArray.js
@@ -121,6 +121,15 @@ export class YArray extends AbstractType {
this.insert(this.length, content)
}
+ /**
+ * Preppends content to this YArray.
+ *
+ * @param {Array