diff --git a/assets/frontmatter/copyright-page.tex b/assets/frontmatter/copyright-page.tex
index 05dac9243..32be31e91 100644
--- a/assets/frontmatter/copyright-page.tex
+++ b/assets/frontmatter/copyright-page.tex
@@ -18,7 +18,8 @@
 \noindent 2026 Edition
 \vskip 1ex
 
- \noindent ISBN: 978-1-958469-38-5
+ \noindent ISBN 978-1-958469-38-5 \\
+ \noindent LCCN 2026947355
 
 \vskip 3em