diff --git a/books.gmi b/books.gmi
index 3ea424a..55964e1 100644
--- a/books.gmi
+++ b/books.gmi
@@ -18,6 +18,7 @@
 
 - Beej's Guide to C (WIP)
 - Beej's Guide to Network Programming
+- Compilers: Principles, Techniques, and Tools 
 
 ## Other
 - Beej's Guide to the GNU Debugger (GDB)