diff --git a/rust-version b/rust-version
index 4cf2697aa4..3c8fa005c3 100644
--- a/rust-version
+++ b/rust-version
@@ -1 +1 @@
-372be4f360ce42b1a10126a711189796f8440ab4
+d35181ad8785fa958e43580a29a982afe02c728f
diff --git a/tests/run-pass/stacked-borrows/interior_mutability.rs b/tests/run-pass/stacked-borrows/interior_mutability.rs
index d27519df48..bd19f153de 100644
--- a/tests/run-pass/stacked-borrows/interior_mutability.rs
+++ b/tests/run-pass/stacked-borrows/interior_mutability.rs
@@ -1,4 +1,4 @@
-#![feature(maybe_uninit, maybe_uninit_ref)]
+#![feature(maybe_uninit_extra, maybe_uninit_ref)]
 use std::mem::MaybeUninit;
 use std::cell::{Cell, RefCell, UnsafeCell};