diff --git a/src/merkle/error.rs b/src/merkle/error.rs
index c7eff70..822a62c 100644
--- a/src/merkle/error.rs
+++ b/src/merkle/error.rs
@@ -2,7 +2,7 @@ use thiserror::Error;
 
 use super::{NodeIndex, RpoDigest};
 
-#[derive(Debug, Error)]
+#[derive(Clone, Debug, Error, Eq, PartialEq)]
 pub enum MerkleError {
     #[error("expected merkle root {expected_root} found {actual_root}")]
     ConflictingRoots {