diff --git a/crates/typst/src/model/document.rs b/crates/typst/src/model/document.rs
index 26b6a54b9..1dc241c03 100644
--- a/crates/typst/src/model/document.rs
+++ b/crates/typst/src/model/document.rs
@@ -54,6 +54,7 @@ pub struct DocumentElem {
     pub date: Smart<Option<Datetime>>,
 
     /// The page runs.
+    #[internal]
     #[variadic]
     pub children: Vec<Content>,
 }