Encode bitfield as list not vector

eth2/utils/bls/src/secret_key.rs

@@ -5,7 +5,7 @@ use serde::de::{Deserialize, Deserializer};
 use serde::ser::{Serialize, Serializer};
 use serde_hex::HexVisitor;
 use ssz::{decode, ssz_encode, Decodable, DecodeError, Encodable, SszStream};
-use tree_hash::impl_tree_hash_for_ssz_bytes;
+use tree_hash::tree_hash_ssz_encoding_as_vector;
 
 /// A single BLS signature.
 ///
@@ -70,7 +70,7 @@ impl<'de> Deserialize<'de> for SecretKey {
     }
 }
 
-impl_tree_hash_for_ssz_bytes!(SecretKey);
+tree_hash_ssz_encoding_as_vector!(SecretKey);
 
 #[cfg(test)]
 mod tests {