diff --git a/examples/hello_world.rs b/examples/hello_world.rs
index e444eeee..6039ee50 100644
--- a/examples/hello_world.rs
+++ b/examples/hello_world.rs
@@ -1,4 +1,3 @@
-#![feature(conservative_impl_trait)]
 #![feature(try_from)]
 
 extern crate futures;
diff --git a/examples/hello_world_await.rs b/examples/hello_world_await.rs
index cd5dd3f5..16c81061 100644
--- a/examples/hello_world_await.rs
+++ b/examples/hello_world_await.rs
@@ -1,4 +1,3 @@
-#![feature(conservative_impl_trait)]
 #![feature(generators)]
 #![feature(proc_macro)]
 #![feature(try_from)]
diff --git a/src/lib.rs b/src/lib.rs
index 836d68dd..a16c6789 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,7 +2,7 @@
 
 #![deny(missing_debug_implementations)]
 #![deny(missing_docs)]
-#![feature(conservative_impl_trait, try_from)]
+#![feature(try_from)]
 
 extern crate futures;
 extern crate hyper;