diff --git a/src/proto/h1/role.rs b/src/proto/h1/role.rs
index 108004a4d1..e4cb11545b 100644
--- a/src/proto/h1/role.rs
+++ b/src/proto/h1/role.rs
@@ -1,3 +1,7 @@
+// `mem::uninitialized` replaced with `mem::MaybeUninit`,
+// can't upgrade yet
+#![allow(deprecated)]
+
 use std::fmt::{self, Write};
 use std::mem;