diff --git a/src/doc/rustc-dev-guide/rust-version b/src/doc/rustc-dev-guide/rust-version
index b1e9eec529e6..8b48bd518bd6 100644
--- a/src/doc/rustc-dev-guide/rust-version
+++ b/src/doc/rustc-dev-guide/rust-version
@@ -1 +1 @@
-99e7c15e81385b38a8186b51edc4577d5d7b5bdd
+c68032fd4c442d275f4daa571ba19c076106b490