diff --git a/src/lib.rs b/src/lib.rs
index 7aa06db..5b77ba4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,5 +1,4 @@
 #![warn(clippy::all)]
-#![feature(negative_impls)]
 
 pub mod adapted_iter;
 pub mod adapters;