diff --git a/book b/book
index 5f63c24..448454f 160000
--- a/book
+++ b/book
@@ -1 +1 @@
-Subproject commit 5f63c24f212066b6a6a1bb5373c55abdede18fcf
+Subproject commit 448454f66c4b6d8b62d7cd246d117a903d33834f
diff --git a/rust-cookbook b/rust-cookbook
index 9a56456..ae27aac 160000
--- a/rust-cookbook
+++ b/rust-cookbook
@@ -1 +1 @@
-Subproject commit 9a564566132487f9d71a1c0d9af51c44f6a06835
+Subproject commit ae27aacf20d1a22a982c5ef97598269e3fce42aa