diff --git a/benches/micro/src/main.rs b/benches/micro/src/main.rs
index 61baf9f48..13a06eec4 100644
--- a/benches/micro/src/main.rs
+++ b/benches/micro/src/main.rs
@@ -8,6 +8,7 @@
 #![allow(dead_code)]
 #![allow(unused_imports)]
 #![feature(test)]
+#![feature(bench_black_box)]
 
 #[cfg(target_os = "hermit")]
 extern crate hermit_sys;