diff --git a/README.md b/README.md
index a71c59863..39685789b 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@
 
 ## Features
 
-ArtPlayer.js is an easy-to-use and feature-rich HTML5 video player, and most of the player's functional controls support customization, which makes it easy to connect with your business logic. In addition, it directly supports `.VTT`, `.ASS` and `.SRT` subtitle formats. Integration with other dependencies such as `flv.js`, `hls.js`, `dash.js`, etc. is also very simple. The code is highly decoupled, the structure and logic are clear, and it is easy to track errors and add new features.
+ArtPlayer.js is an easy-to-use and feature-rich HTML5 video player, and most of the player's functional controls support customization, which makes it easy to connect with your business logic. In addition, it directly supports `.vtt`, `.ass` and `.srt` subtitle formats. Integration with other dependencies such as `flv.js`, `hls.js`, `dash.js`, etc. is also very simple. The code is highly decoupled, the structure and logic are clear, and it is easy to track errors and add new features.