diff --git a/proc/src/lib.rs b/proc/src/lib.rs
index 1c31c78..da938ad 100644
--- a/proc/src/lib.rs
+++ b/proc/src/lib.rs
@@ -1,5 +1,3 @@
-#![feature(str_as_str)]
-#![feature(box_patterns)]
 extern crate proc_macro;
 
 pub(crate) use std::collections::BTreeMap;