diff --git a/.reuse/dep5 b/.reuse/dep5
index 6ff7050..99ef9e6 100644
--- a/.reuse/dep5
+++ b/.reuse/dep5
@@ -7,7 +7,7 @@ Files: book/source/diag/*.png  book/source/diag/*.svg
 Copyright: 2023  The "Notes on OpenPGP" project
 License: CC-BY-SA-4.0
 
-Files: book/source/mermaid/*.png
+Files:  book/source/drawio/* book/input/09-sigtree.md book/source/mermaid/*.png
 Copyright: 2023  The "Notes on OpenPGP" project
 License: CC-BY-SA-4.0