diff --git a/rust-version b/rust-version
index b0af10f44a..60ef1e36f7 100644
--- a/rust-version
+++ b/rust-version
@@ -1 +1 @@
-eb48d6bdee6c655d71f26594d47d232adf3e4e93
+b35ebac96102cd12406d9d87827b0838d129c278
diff --git a/src/helpers.rs b/src/helpers.rs
index 3eafb28b89..ad30040c2d 100644
--- a/src/helpers.rs
+++ b/src/helpers.rs
@@ -71,7 +71,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx
     /// Get the `Place` for a local
     fn local_place(&mut self, local: mir::Local) -> InterpResult<'tcx, PlaceTy<'tcx, Tag>> {
         let this = self.eval_context_mut();
-        let place = mir::Place { base: mir::PlaceBase::Local(local), projection: None };
+        let place = mir::Place { base: mir::PlaceBase::Local(local), projection: Box::new([]) };
         this.eval_place(&place)
     }