diff --git a/coins/ethereum/tests/contract.rs b/coins/ethereum/tests/contract.rs
index 06b18d65..f4dbc8ef 100644
--- a/coins/ethereum/tests/contract.rs
+++ b/coins/ethereum/tests/contract.rs
@@ -12,7 +12,7 @@ use ethers::{
 use frost::{
   curve::Secp256k1,
   Participant,
-  algorithm::Schnorr as Algo,
+  algorithm::IetfSchnorr,
   tests::{key_gen, algorithm_machines, sign},
 };
 
@@ -52,7 +52,7 @@ async fn test_ecrecover_hack() {
 
   let full_message = &[chain_id.to_be_byte_array().as_slice(), &hashed_message].concat();
 
-  let algo = Algo::<Secp256k1, crypto::EthereumHram>::new();
+  let algo = IetfSchnorr::<Secp256k1, crypto::EthereumHram>::ietf();
   let sig = sign(
     &mut OsRng,
     algo.clone(),
diff --git a/coins/ethereum/tests/crypto.rs b/coins/ethereum/tests/crypto.rs
index 01413ece..cc8359ed 100644
--- a/coins/ethereum/tests/crypto.rs
+++ b/coins/ethereum/tests/crypto.rs
@@ -36,7 +36,7 @@ fn test_ecrecover() {
 #[test]
 fn test_signing() {
   use frost::{
-    algorithm::Schnorr,
+    algorithm::IetfSchnorr,
     tests::{algorithm_machines, key_gen, sign},
   };
   use rand_core::OsRng;
@@ -46,12 +46,12 @@ fn test_signing() {
 
   const MESSAGE: &[u8] = b"Hello, World!";
 
-  let algo = Schnorr::<Secp256k1, EthereumHram>::new();
+  let algo = IetfSchnorr::<Secp256k1, EthereumHram>::ietf();
   let _sig = sign(
     &mut OsRng,
     algo,
     keys.clone(),
-    algorithm_machines(&mut OsRng, Schnorr::<Secp256k1, EthereumHram>::new(), &keys),
+    algorithm_machines(&mut OsRng, IetfSchnorr::<Secp256k1, EthereumHram>::ietf(), &keys),
     MESSAGE,
   );
 }
@@ -59,7 +59,7 @@ fn test_signing() {
 #[test]
 fn test_ecrecover_hack() {
   use frost::{
-    algorithm::Schnorr,
+    algorithm::IetfSchnorr,
     tests::{algorithm_machines, key_gen, sign},
   };
   use rand_core::OsRng;
@@ -76,7 +76,7 @@ fn test_ecrecover_hack() {
 
   let full_message = &[chain_id.to_be_byte_array().as_slice(), &hashed_message].concat();
 
-  let algo = Schnorr::<Secp256k1, EthereumHram>::new();
+  let algo = IetfSchnorr::<Secp256k1, EthereumHram>::ietf();
   let sig = sign(
     &mut OsRng,
     algo.clone(),
diff --git a/crypto/frost/Cargo.toml b/crypto/frost/Cargo.toml
index 637c1498..1ce90194 100644
--- a/crypto/frost/Cargo.toml
+++ b/crypto/frost/Cargo.toml
@@ -39,6 +39,7 @@ dleq = { path = "../dleq", version = "0.2", features = ["serialize"] }
 dkg = { path = "../dkg", version = "0.2" }
 
 [dev-dependencies]
+hex = "0.4"
 serde_json = "1"
 
 dkg = { path = "../dkg", version = "0.2", features = ["tests"] }