diff --git a/README.en.md b/README.en.md
index 1876cf6..3718778 100644
--- a/README.en.md
+++ b/README.en.md
@@ -24,7 +24,7 @@ You can also download the zip package with the `SelfContained` suffix, which can
 - [x] Frame Sequence
 - [x] Animated GIF
 - [ ] MKV
-- [ ] MP4
+- [x] MP4
 - [ ] MOV
 - [ ] WebM
 
diff --git a/README.md b/README.md
index 9867299..c011a38 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@
 - [x] 帧序列
 - [x] GIF 动图
 - [ ] MKV
-- [ ] MP4
+- [x] MP4
 - [ ] MOV
 - [ ] WebM