diff --git a/src/doc/embedded-book b/src/doc/embedded-book
index b2e1092bf67..b81ffb7a6f4 160000
--- a/src/doc/embedded-book
+++ b/src/doc/embedded-book
@@ -1 +1 @@
-Subproject commit b2e1092bf67bd4d7686c4553f186edbb7f5f92db
+Subproject commit b81ffb7a6f4c5aaed92786e770e99db116aa4ebd
diff --git a/src/doc/nomicon b/src/doc/nomicon
index 3e6e1001dc6..9f797e65e6b 160000
--- a/src/doc/nomicon
+++ b/src/doc/nomicon
@@ -1 +1 @@
-Subproject commit 3e6e1001dc6e095dbd5c88005e80969f60e384e1
+Subproject commit 9f797e65e6bcc79419975b17aff8e21c9adc039f
diff --git a/src/doc/reference b/src/doc/reference
index 64239df6d17..559e09caa96 160000
--- a/src/doc/reference
+++ b/src/doc/reference
@@ -1 +1 @@
-Subproject commit 64239df6d173562b9deb4f012e4c3e6e960c4754
+Subproject commit 559e09caa9661043744cf7af7bd88432d966f743
diff --git a/src/doc/rust-by-example b/src/doc/rust-by-example
index 32facd5522d..db57f899ea2 160000
--- a/src/doc/rust-by-example
+++ b/src/doc/rust-by-example
@@ -1 +1 @@
-Subproject commit 32facd5522ddbbf37baf01e4e4b6562bc55c071a
+Subproject commit db57f899ea2a56a544c8d280cbf033438666273d