diff --git a/src/lib.rs b/src/lib.rs
index a85161b..433edec 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,8 +1,6 @@
 #![doc = include_str!("../README.md")]
 #![deny(unsafe_code)]
-#![feature(auto_traits)]
 #![feature(doc_auto_cfg)]
-#![feature(negative_impls)]
 
 mod context;
 pub use context::{Context, IntoContext};