diff --git a/_extensions/orange-book/typst-show.typ b/_extensions/orange-book/typst-show.typ
index 337128f..0fa88f8 100644
--- a/_extensions/orange-book/typst-show.typ
+++ b/_extensions/orange-book/typst-show.typ
@@ -15,6 +15,15 @@ $if(date)$
 $endif$
 $if(lang)$
   lang: "$lang$",
+$endif$
+$if(papersize)$
+  paper-size: "$papersize$",
+$endif$
+$if(paper-width)$
+  width: $paper-width$,
+$endif$
+$if(paper-height)$
+  height: $paper-height$,
 $endif$
   main-color: brand-color.at("primary", default: blue),
   logo: {