diff --git a/src/lib.rs b/src/lib.rs
index fc31dad..235ea72 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,7 +2,7 @@
 #![allow(clippy::too_many_arguments, clippy::needless_range_loop)]
 #![allow(clippy::not_unsafe_ptr_arg_deref)]
 #![deny(missing_docs)]
-#![warn(clippy::missing_docs_in_private_items)]
+#![deny(clippy::missing_docs_in_private_items)]
 #![feature(test)]
 #![feature(bench_black_box)]
 #![feature(let_chains)]