diff --git a/book/credits.md b/book/credits.md
index 970190e..a46413e 100644
--- a/book/credits.md
+++ b/book/credits.md
@@ -31,7 +31,7 @@ Ths doesn't include small contributions from various people from within and outs
 
 Parts of this book are taken from other external resources. If an author is not listed on a particular page, it is by the Authors. The following pages are not edited by the TeachBooks Team:
 
-- [](external/latex-to-markdown-conversion/README.md) {cite:ts}`timon_latex`, not licensed.
+- [](external/latex-to-markdown-conversion/README.md) {cite:ts}`timon_latex`, [BSD 3-clause license](https://opensource.org/license/BSD-3-Clause).
 
 ## Acknowledgements
 Big thanks to the various colleagues and teaching assistant part of the [TeachBooks](https://teachbooks.io/) for developing tools and providing support to improve this book.