diff --git a/lib/types/beacon_chain/beacon_block_body_deneb.ex b/lib/types/beacon_chain/beacon_block_body_deneb.ex
index fbaa8ebdb..dbaed8119 100644
--- a/lib/types/beacon_chain/beacon_block_body_deneb.ex
+++ b/lib/types/beacon_chain/beacon_block_body_deneb.ex
@@ -63,7 +63,8 @@ defmodule Types.BeaconBlockBodyDeneb do
       {:execution_payload, Types.ExecutionPayloadDeneb},
       {:bls_to_execution_changes,
        {:list, Types.BLSToExecutionChange, ChainSpec.get("MAX_BLS_TO_EXECUTION_CHANGES")}},
-      {:blob_kzg_commitments, {:list, TypeAliases.kzg_commitment()}}
+      {:blob_kzg_commitments,
+       {:list, TypeAliases.kzg_commitment(), ChainSpec.get("MAX_BLOB_COMMITMENTS_PER_BLOCK")}}
     ]
   end
 end