diff --git a/src/lib.rs b/src/lib.rs
index 1565582..a845eb1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -220,10 +220,6 @@
 #![no_std]
 
 #![doc(html_root_url = "https://docs.rs/bitflags/1.0.0")]
-// When compiled for the rustc compiler itself we want to make sure that this is
-// an unstable crate.
-#![cfg_attr(rustbuild, feature(staged_api))]
-#![cfg_attr(rustbuild, unstable(feature = "rustc_private", issue = "27812"))]
 
 #[cfg(test)]
 #[macro_use]