diff --git a/Cargo.toml b/Cargo.toml
index 033a3cc..25668d3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,6 +17,7 @@ serde = { version = "1", optional = true, features = ["derive"] }
 borsh = { version = "1", features = ["derive"], optional = true }
 
 [dev-dependencies]
+nmt-rs = { path = ".", features = ["borsh", "serde"]}
 borsh = { version = "1" }
 serde_json = "1.0.96"
 postcard = { version = "1.0.4" }
diff --git a/src/namespaced_hash.rs b/src/namespaced_hash.rs
index d1832d5..f9e1df5 100644
--- a/src/namespaced_hash.rs
+++ b/src/namespaced_hash.rs
@@ -399,14 +399,12 @@ impl<const NS_ID_SIZE: usize> TryFrom<&[u8]> for NamespacedHash<NS_ID_SIZE> {
 mod tests {
     use crate::NamespacedHash;
     use borsh::de::BorshDeserialize;
-    use borsh::ser::BorshSerialize;
 
     #[test]
     fn test_namespaced_hash_borsh() {
         let hash = NamespacedHash::<8>::try_from([8u8; 48].as_ref()).unwrap();
 
-        let serialized = hash
-            .try_to_vec()
+        let serialized = borsh::to_vec(&hash)
             .expect("Serialization to vec must succeed");
 
         let got =
diff --git a/src/simple_merkle/tree.rs b/src/simple_merkle/tree.rs
index 24b6e32..07aa2a1 100644
--- a/src/simple_merkle/tree.rs
+++ b/src/simple_merkle/tree.rs
@@ -79,6 +79,17 @@ pub trait MerkleHash {
         + serde::Serialize
         + serde::de::DeserializeOwned;
 
+    #[cfg(all(not(feature = "serde"), feature = "borsh", feature = "std"))]
+    type Output: Debug
+    + PartialEq
+    + Eq
+    + Clone
+    + Default
+    + Hash
+    + Ord
+    + borsh::BorshSerialize
+    + borsh::BorshDeserialize;
+
     /// The output of this hasher
     #[cfg(all(feature = "serde", feature = "borsh", feature = "std"))]
     type Output: Debug