diff --git a/book b/book
index f86181e..8345135 160000
--- a/book
+++ b/book
@@ -1 +1 @@
-Subproject commit f86181ea0e97177b08f4c31e428fd03cb1b883bf
+Subproject commit 83451350b74f0c822f75d9dffe9c7108b419390d
diff --git a/rust-cookbook b/rust-cookbook
index 2ecc9f8..275553c 160000
--- a/rust-cookbook
+++ b/rust-cookbook
@@ -1 +1 @@
-Subproject commit 2ecc9f8c5bad3dddfe8fa616b62c33fc22b74ad8
+Subproject commit 275553c01cac262b0bdaad09f59ee1d291075db3