diff --git a/da/encoder.py b/da/encoder.py
index c4b3344..640f675 100644
--- a/da/encoder.py
+++ b/da/encoder.py
@@ -1,7 +1,7 @@
 from dataclasses import dataclass
 from itertools import batched, chain
 from typing import List, Sequence, Tuple
-from hashlib import sha256
+from hashlib import sha3_256
 
 from eth2spec.eip7594.mainnet import KZGCommitment as Commitment, KZGProof as Proof, BLSFieldElement
 
@@ -120,5 +120,5 @@ class DAEncoder:
     def _hash_column_and_commitment(column: Column, commitment: Commitment) -> bytes:
         # TODO: Check correctness of bytes to blsfieldelement using modulus over the hash
         return (
-                int.from_bytes(sha256(column.as_bytes() + bytes(commitment)).digest()) % BLS_MODULUS
+                int.from_bytes(sha3_256(column.as_bytes() + bytes(commitment)).digest()) % BLS_MODULUS
         ).to_bytes(32, byteorder="big")
diff --git a/da/test_encoder.py b/da/test_encoder.py
index 125ab3d..efb9788 100644
--- a/da/test_encoder.py
+++ b/da/test_encoder.py
@@ -5,7 +5,7 @@ from unittest import TestCase
 from eth2spec.deneb.mainnet import bytes_to_bls_field
 
 from da import encoder
-from da.encoder import DAEncoderParams, Commitment, DAEncoder
+from da.encoder import DAEncoderParams, DAEncoder
 from eth2spec.eip7594.mainnet import BYTES_PER_FIELD_ELEMENT, BLSFieldElement
 
 from da.kzg_rs.common import BLS_MODULUS, ROOTS_OF_UNITY