diff --git a/books/0.4.0/book.md b/books/0.4.0/book.md
index 22654e9..f83d3aa 100644
--- a/books/0.4.0/book.md
+++ b/books/0.4.0/book.md
@@ -36,6 +36,7 @@
     * #[Sandbox Configuration]
 * #[Gateway Details]
     * #[Configuration]
+    * #[Knox CLI]
     * #[Authentication]
     * #[LDAPGroupLookup]
     * #[Identity Assertion]
diff --git a/books/0.4.0/book_gateway-details.md b/books/0.4.0/book_gateway-details.md
index 8721a29..5890f73 100644
--- a/books/0.4.0/book_gateway-details.md
+++ b/books/0.4.0/book_gateway-details.md
@@ -51,6 +51,7 @@
 Their values can also be provided via the cluster topology descriptor if your Hadoop cluster uses different ports.
 
 <<config.md>>
+<<knox_cli.md>>
 <<config_authn.md>>
 <<config_ldap_group_lookup.md>>
 <<config_id_assertion.md>>