diff --git a/src/doc/rustc-dev-guide/rust-version b/src/doc/rustc-dev-guide/rust-version
index 67de4a98165..dc52e0928cc 100644
--- a/src/doc/rustc-dev-guide/rust-version
+++ b/src/doc/rustc-dev-guide/rust-version
@@ -1 +1 @@
-a7c39b68616668a45f0afd62849a1da7c8ad2516
+b8005bff3248cfc6e327faf4fa631ac49bb49ba9