diff --git a/src/lib.rs b/src/lib.rs
index 493c052..57e8506 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -49,7 +49,7 @@
 //! }
 //! ```
 
-#![feature(proc_macro, wasm_custom_section, wasm_import_module)]
+#![feature(use_extern_macros, wasm_custom_section, wasm_import_module)]
 
 #[macro_use]
 extern crate cfg_if;