diff --git a/src/main.rs b/src/main.rs
index 23a30b9..7859043 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -8,7 +8,6 @@
 #![feature(ptr_internals)] // until we mark with PhantomData instead?
 #![feature(core_intrinsics)]
 #![feature(range_contains)]
-#![feature(try_from)]
 #![feature(underscore_const_names)]
 #![doc(html_root_url = "https://docs.metta.systems/")]
 #![allow(dead_code)]