diff --git a/src/doc/rustc-dev-guide b/src/doc/rustc-dev-guide
index d08baa166b4..fca8af6c154 160000
--- a/src/doc/rustc-dev-guide
+++ b/src/doc/rustc-dev-guide
@@ -1 +1 @@
-Subproject commit d08baa166b463537229eeb737c4ccadabd83cf78
+Subproject commit fca8af6c154c6cde2512f1331cf2704f214a818e