diff --git a/src/doc/book b/src/doc/book
index 7e49659102f..687e21bde2e 160000
--- a/src/doc/book
+++ b/src/doc/book
@@ -1 +1 @@
-Subproject commit 7e49659102f0977d9142190e1ba23345c0f00eb1
+Subproject commit 687e21bde2ea10c261f79fa14797c5137425098d
diff --git a/src/doc/reference b/src/doc/reference
index 4884fe45c14..da6ea9b03f7 160000
--- a/src/doc/reference
+++ b/src/doc/reference
@@ -1 +1 @@
-Subproject commit 4884fe45c14f8b22121760fb117181bb4da8dfe0
+Subproject commit da6ea9b03f74cae0a292f40315723d7a3a973637
diff --git a/src/doc/rust-by-example b/src/doc/rust-by-example
index 0dc9cd4e89f..04f489c8892 160000
--- a/src/doc/rust-by-example
+++ b/src/doc/rust-by-example
@@ -1 +1 @@
-Subproject commit 0dc9cd4e89f00cb5230f120e1a083916386e422b
+Subproject commit 04f489c889235fe3b6dfe678ae5410d07deda958
diff --git a/src/doc/rustc-dev-guide b/src/doc/rustc-dev-guide
index c4644b427cb..cf0e151b792 160000
--- a/src/doc/rustc-dev-guide
+++ b/src/doc/rustc-dev-guide
@@ -1 +1 @@
-Subproject commit c4644b427cbdaafc7a87be0ccdf5d8aaa07ac35f
+Subproject commit cf0e151b7925a40f13fbc6573c6f97d5f94c7c17