diff --git a/src/mp4box/mod.rs b/src/mp4box/mod.rs
index 0af14b5..45f6076 100644
--- a/src/mp4box/mod.rs
+++ b/src/mp4box/mod.rs
@@ -110,6 +110,7 @@ pub use emsg::EmsgBox;
 pub use ftyp::FtypBox;
 pub use moof::MoofBox;
 pub use moov::MoovBox;
+pub use trak::TrakBox;
 
 pub const HEADER_SIZE: u64 = 8;
 // const HEADER_LARGE_SIZE: u64 = 16;