diff --git a/manuscript/Book.txt b/manuscript/Book.txt
index 8ff919c..f2abaa3 100644
--- a/manuscript/Book.txt
+++ b/manuscript/Book.txt
@@ -1,5 +1,6 @@
 authors.txt
 contributors.txt
+disclaimer.txt
 introduction.txt
 chapter1.txt
 chapter2.txt