diff --git a/consensus/types/src/kzg_proof.rs b/consensus/types/src/kzg_proof.rs
index 9b917f8e1..879620bd6 100644
--- a/consensus/types/src/kzg_proof.rs
+++ b/consensus/types/src/kzg_proof.rs
@@ -1,8 +1,9 @@
 use crate::test_utils::{RngCore, TestRandom};
-use serde::{Deserialize, Deserializer, Serialize, Serializer};
+use serde::{Deserialize, Serialize};
 use ssz::{Decode, DecodeError, Encode};
 use std::fmt;
 use tree_hash::{PackedEncoding, TreeHash};
+use serde_big_array::BigArray;
 
 const KZG_PROOF_BYTES_LEN: usize = 48;
 
@@ -34,40 +35,6 @@ impl Into<[u8; KZG_PROOF_BYTES_LEN]> for KzgProof {
     }
 }
 
-pub mod serde_kzg_proof {
-    use super::*;
-    use serde::de::Error;
-
-    pub fn serialize<S>(bytes: &[u8; KZG_PROOF_BYTES_LEN], serializer: S) -> Result<S::Ok, S::Error>
-    where
-        S: Serializer,
-    {
-        serializer.serialize_str(&eth2_serde_utils::hex::encode(bytes))
-    }
-
-    pub fn deserialize<'de, D>(deserializer: D) -> Result<[u8; KZG_PROOF_BYTES_LEN], D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        let s: String = Deserialize::deserialize(deserializer)?;
-
-        let bytes = eth2_serde_utils::hex::decode(&s).map_err(D::Error::custom)?;
-
-        if bytes.len() != KZG_PROOF_BYTES_LEN {
-            return Err(D::Error::custom(format!(
-                "incorrect byte length {}, expected {}",
-                bytes.len(),
-                KZG_PROOF_BYTES_LEN
-            )));
-        }
-
-        let mut array = [0; KZG_PROOF_BYTES_LEN];
-        array[..].copy_from_slice(&bytes);
-
-        Ok(array)
-    }
-}
-
 impl Encode for KzgProof {
     fn is_ssz_fixed_len() -> bool {
         <[u8; KZG_PROOF_BYTES_LEN] as Encode>::is_ssz_fixed_len()