diff --git a/website/pages/en/developing/assemblyscript-api.mdx b/website/pages/en/developing/assemblyscript-api.mdx
index b8d735f029d6..85ebcb8120dc 100644
--- a/website/pages/en/developing/assemblyscript-api.mdx
+++ b/website/pages/en/developing/assemblyscript-api.mdx
@@ -725,6 +725,7 @@ When the type of a value is certain, it can be converted to a [built-in type](#b
 | BigInt               | BigDecimal           | s.toBigDecimal()             |
 | BigInt               | String (hexadecimal) | s.toHexString() or s.toHex() |
 | BigInt               | String (unicode)     | s.toString()                 |
+| BigInt               | Bytes                | s.fromBigInt()               |
 | BigInt               | i32                  | s.toI32()                    |
 | Boolean              | Boolean              | none                         |
 | Bytes (signed)       | BigInt               | BigInt.fromSignedBytes(s)    |