diff --git a/docs/guide/output-formats.md b/docs/guide/output-formats.md
index 03d358b..98e61d3 100644
--- a/docs/guide/output-formats.md
+++ b/docs/guide/output-formats.md
@@ -247,11 +247,16 @@ The following options are available:
 ```ts
 type WavOutputFormatOptions = {
 	large?: boolean;
+	metadataFormat?: 'info' | 'id3';
 	onHeader?: (data: Uint8Array, position: number) => unknown;
 };
 ```
 - `large`\
 	When enabled, an RF64 file be written, allowing for file sizes to exceed 4 GiB, which is otherwise not possible for regular WAVE files.
+- `metadataFormat`\
+	The metadata format to use for writing metadata tags.
+	- `'info'` (default): Writes metadata into a RIFF INFO LIST chunk, the default way to contain metadata tags within WAVE. Only allows for a limited subset of tags to be written.
+	- `'id3'`: Writes metadata into an ID3 chunk. Non-default, but used by many taggers in practice. Allows for a much larger and richer set of tags to be written.
 - `onHeader`\
 	Will be called once the file header is written. The header consists of the RIFF header, the format chunk, and the start of the data chunk (with a placeholder size of 0).