diff --git a/eth2/utils/cached_tree_hash/src/resize.rs b/eth2/utils/cached_tree_hash/src/resize.rs
index 770522b11b..5428e234b5 100644
--- a/eth2/utils/cached_tree_hash/src/resize.rs
+++ b/eth2/utils/cached_tree_hash/src/resize.rs
@@ -1,3 +1,5 @@
+#![allow(clippy::range_plus_one)] // Minor readability lint requiring structural changes; not worth it.
+
 use super::*;
 
 /// New vec is bigger than old vec.
diff --git a/eth2/utils/cached_tree_hash/src/tree_hash_cache.rs b/eth2/utils/cached_tree_hash/src/tree_hash_cache.rs
index 283a98974c..acb96ba241 100644
--- a/eth2/utils/cached_tree_hash/src/tree_hash_cache.rs
+++ b/eth2/utils/cached_tree_hash/src/tree_hash_cache.rs
@@ -1,3 +1,5 @@
+#![allow(clippy::range_plus_one)] // Minor readability lint requiring structural changes; not worth it.
+
 use super::*;
 use crate::merkleize::{merkleize, pad_for_leaf_count};
 use int_to_bytes::int_to_bytes32;