diff --git a/book.asciidoc b/book.asciidoc
index 763a5e73..b3e7324d 100644
--- a/book.asciidoc
+++ b/book.asciidoc
@@ -12,4 +12,6 @@ include::ch03.asciidoc[]
 
 include::ch04.asciidoc[]
 
-include::ch05.asciidoc[]
\ No newline at end of file
+include::ch05.asciidoc[]
+
+include::ch06.asciidoc[]
\ No newline at end of file