diff --git a/cpz/src/main.rs b/cpz/src/main.rs
index 4e7ce8d..0d0922d 100644
--- a/cpz/src/main.rs
+++ b/cpz/src/main.rs
@@ -1,5 +1,6 @@
 #![feature(once_cell)]
 #![feature(let_chains)]
+#![feature(main_separator_str)]
 
 use std::{
     borrow::Cow,