diff --git a/docs/1.0.md b/docs/1.0.md
index e4a2894..e9b18ce 100644
--- a/docs/1.0.md
+++ b/docs/1.0.md
@@ -29,7 +29,7 @@ Multiple
 #### Attributes
  - **url:** URL of the podcast transcript.
 
- - **type:** Mime type of the file such as `text/plain`, `text/html`, `application/srt`, `application/json`
+ - **type:** Mime type of the file such as `text/plain`, `text/html`, `application/srt`, `text/vtt`, `application/json`
 
  - **language (optional):** The language of the linked transcript. If there is no language attribute given, the linked file is assumed to be the same language that is specified by the RSS `<language>` element.