diff --git a/docs/src/content/docs/api-input.md b/docs/src/content/docs/api-input.md
index a5a9e373..8477f1ff 100644
--- a/docs/src/content/docs/api-input.md
+++ b/docs/src/content/docs/api-input.md
@@ -17,7 +17,7 @@ Dimensions in the response will respect the `page` and `pages` properties of the
 
 A `Promise` is returned when `callback` is not provided.
 
-- `format`: Name of decoder used to decompress image data e.g. `jpeg`, `png`, `webp`, `gif`, `svg`
+- `format`: Name of decoder used to parse image e.g. `jpeg`, `png`, `webp`, `gif`, `svg`, `heif`, `tiff`
 - `size`: Total size of image in bytes, for Stream and Buffer input only
 - `width`: Number of pixels wide (EXIF orientation is not taken into consideration, see example below)
 - `height`: Number of pixels high (EXIF orientation is not taken into consideration, see example below)
diff --git a/lib/input.js b/lib/input.js
index 728b7188..48388a1d 100644
--- a/lib/input.js
+++ b/lib/input.js
@@ -574,7 +574,7 @@ function _isStreamInput () {
  *
  * A `Promise` is returned when `callback` is not provided.
  *
- * - `format`: Name of decoder used to decompress image data e.g. `jpeg`, `png`, `webp`, `gif`, `svg`
+ * - `format`: Name of decoder used to parse image e.g. `jpeg`, `png`, `webp`, `gif`, `svg`, `heif`, `tiff`
  * - `size`: Total size of image in bytes, for Stream and Buffer input only
  * - `width`: Number of pixels wide (EXIF orientation is not taken into consideration, see example below)
  * - `height`: Number of pixels high (EXIF orientation is not taken into consideration, see example below)