diff --git a/src/doc/rustc-dev-guide/rust-version b/src/doc/rustc-dev-guide/rust-version
index fa65931bdc52..b62959720764 100644
--- a/src/doc/rustc-dev-guide/rust-version
+++ b/src/doc/rustc-dev-guide/rust-version
@@ -1 +1 @@
-8239a37f9c0951a037cfc51763ea52a20e71e6bd
+613bdd49978298648ed05ace086bd1ecad54b44a