diff --git a/docs/edupiracyguide.md b/docs/edupiracyguide.md
index 2fa5aafb5..98fc91966 100644
--- a/docs/edupiracyguide.md
+++ b/docs/edupiracyguide.md
@@ -258,6 +258,7 @@
 * [MusicStaff](https://musicstaff.com/) - Music Teacher Search
 * [ChiffAndFipple](https://forums.chiffandfipple.com/index.php) - Irish Traditional Music Forum
 * [MIMO](https://mimo-international.com/MIMO/) - Musical Instrument Database
+* [Tagirijus Books](https://books.tagirijus.de/) - German knowledge base for music theory and music production
 
 ***