diff --git a/src/doc/rustc-dev-guide/rust-version b/src/doc/rustc-dev-guide/rust-version
index 8b48bd518bd6..c8721bb36001 100644
--- a/src/doc/rustc-dev-guide/rust-version
+++ b/src/doc/rustc-dev-guide/rust-version
@@ -1 +1 @@
-c68032fd4c442d275f4daa571ba19c076106b490
+c31cccb7b5cc098b1a8c1794ed38d7fdbec0ccb0