diff --git a/src/lib.rs b/src/lib.rs
index 7e65a85c..abef3430 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -56,6 +56,7 @@ pub mod prelude {
     pub use commit_verify::ReservedBytes;
     pub use operation::*;
     pub use schema::*;
+    pub use vm::XWitnessId;
 
     #[cfg(feature = "stl")]
     pub use super::stl;