diff --git a/book b/book
index de25cec..3db98d7 160000
--- a/book
+++ b/book
@@ -1 +1 @@
-Subproject commit de25cec2c9e452b0a6d8fc380f9aa2fdd9888151
+Subproject commit 3db98d7d2fd5173347205db2d79f25691a866796
diff --git a/rust-by-example b/rust-by-example
index 1dd3249..ee7f5c7 160000
--- a/rust-by-example
+++ b/rust-by-example
@@ -1 +1 @@
-Subproject commit 1dd3249cd54150795f96efcfe8e60bb03e63d72b
+Subproject commit ee7f5c7245536b9a2a0ccb21eb4d95741c9efe91