diff --git a/beacon_node/execution_layer/src/block_hash.rs b/beacon_node/execution_layer/src/block_hash.rs
index fac07c72649..93931aaa51c 100644
--- a/beacon_node/execution_layer/src/block_hash.rs
+++ b/beacon_node/execution_layer/src/block_hash.rs
@@ -38,11 +38,11 @@ impl<T: EthSpec> ExecutionLayer<T> {
             None
         };
 
-        let rlp_data_gas_used = payload.data_gas_used().ok();
-        let rlp_excess_data_gas = payload.excess_data_gas().ok();
+        let rlp_blob_gas_used = payload.blob_gas_used().ok();
+        let rlp_excess_blob_gas = payload.excess_blob_gas().ok();
 
         // Calculate parent beacon block root (post-Deneb).
-        let rlp_parent_beacon_block_root = rlp_excess_data_gas
+        let rlp_parent_beacon_block_root = rlp_excess_blob_gas
             .as_ref()
             .map(|_| parent_beacon_block_root);
 
@@ -52,8 +52,8 @@ impl<T: EthSpec> ExecutionLayer<T> {
             KECCAK_EMPTY_LIST_RLP.as_fixed_bytes().into(),
             rlp_transactions_root,
             rlp_withdrawals_root,
-            rlp_data_gas_used,
-            rlp_excess_data_gas,
+            rlp_blob_gas_used,
+            rlp_excess_blob_gas,
             rlp_parent_beacon_block_root,
         );
 
@@ -110,11 +110,11 @@ pub fn rlp_encode_block_header(header: &ExecutionBlockHeader) -> Vec<u8> {
     if let Some(withdrawals_root) = &header.withdrawals_root {
         rlp_header_stream.append(withdrawals_root);
     }
-    if let Some(data_gas_used) = &header.data_gas_used {
-        rlp_header_stream.append(data_gas_used);
+    if let Some(blob_gas_used) = &header.blob_gas_used {
+        rlp_header_stream.append(blob_gas_used);
     }
-    if let Some(excess_data_gas) = &header.excess_data_gas {
-        rlp_header_stream.append(excess_data_gas);
+    if let Some(excess_blob_gas) = &header.excess_blob_gas {
+        rlp_header_stream.append(excess_blob_gas);
     }
     if let Some(parent_beacon_block_root) = &header.parent_beacon_block_root {
         rlp_header_stream.append(parent_beacon_block_root);
@@ -165,8 +165,8 @@ mod test {
             nonce: Hash64::zero(),
             base_fee_per_gas: 0x036b_u64.into(),
             withdrawals_root: None,
-            data_gas_used: None,
-            excess_data_gas: None,
+            blob_gas_used: None,
+            excess_blob_gas: None,
             parent_beacon_block_root: None,
         };
         let expected_rlp = "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";
@@ -196,8 +196,8 @@ mod test {
             nonce: Hash64::zero(),
             base_fee_per_gas: 0x036b_u64.into(),
             withdrawals_root: None,
-            data_gas_used: None,
-            excess_data_gas: None,
+            blob_gas_used: None,
+            excess_blob_gas: None,
             parent_beacon_block_root: None,
         };
         let expected_rlp = "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";
@@ -228,8 +228,8 @@ mod test {
             nonce: Hash64::zero(),
             base_fee_per_gas: 0x34187b238_u64.into(),
             withdrawals_root: None,
-            data_gas_used: None,
-            excess_data_gas: None,
+            blob_gas_used: None,
+            excess_blob_gas: None,
             parent_beacon_block_root: None,
         };
         let expected_hash =
diff --git a/beacon_node/execution_layer/src/engine_api.rs b/beacon_node/execution_layer/src/engine_api.rs
index 45cf2004659..80f4ac7485b 100644
--- a/beacon_node/execution_layer/src/engine_api.rs
+++ b/beacon_node/execution_layer/src/engine_api.rs
@@ -198,10 +198,10 @@ pub struct ExecutionBlockWithTransactions<T: EthSpec> {
     pub withdrawals: Vec<JsonWithdrawal>,
     #[superstruct(only(Deneb))]
     #[serde(with = "serde_utils::u64_hex_be")]
-    pub data_gas_used: u64,
+    pub blob_gas_used: u64,
     #[superstruct(only(Deneb))]
     #[serde(with = "serde_utils::u64_hex_be")]
-    pub excess_data_gas: u64,
+    pub excess_blob_gas: u64,
 }
 
 impl<T: EthSpec> TryFrom<ExecutionPayload<T>> for ExecutionBlockWithTransactions<T> {
@@ -278,8 +278,8 @@ impl<T: EthSpec> TryFrom<ExecutionPayload<T>> for ExecutionBlockWithTransactions
                     .into_iter()
                     .map(|withdrawal| withdrawal.into())
                     .collect(),
-                data_gas_used: block.data_gas_used,
-                excess_data_gas: block.excess_data_gas,
+                blob_gas_used: block.blob_gas_used,
+                excess_blob_gas: block.excess_blob_gas,
             }),
         };
         Ok(json_payload)
@@ -562,8 +562,8 @@ impl<E: EthSpec> ExecutionPayloadBodyV1<E> {
                         block_hash: header.block_hash,
                         transactions: self.transactions,
                         withdrawals,
-                        data_gas_used: header.data_gas_used,
-                        excess_data_gas: header.excess_data_gas,
+                        blob_gas_used: header.blob_gas_used,
+                        excess_blob_gas: header.excess_blob_gas,
                     }))
                 } else {
                     Err(format!(
diff --git a/beacon_node/execution_layer/src/engine_api/json_structures.rs b/beacon_node/execution_layer/src/engine_api/json_structures.rs
index 487bfa07867..bce4e686f92 100644
--- a/beacon_node/execution_layer/src/engine_api/json_structures.rs
+++ b/beacon_node/execution_layer/src/engine_api/json_structures.rs
@@ -100,10 +100,10 @@ pub struct JsonExecutionPayload<T: EthSpec> {
     pub withdrawals: VariableList<JsonWithdrawal, T::MaxWithdrawalsPerPayload>,
     #[superstruct(only(V3))]
     #[serde(with = "serde_utils::u64_hex_be")]
-    pub data_gas_used: u64,
+    pub blob_gas_used: u64,
     #[superstruct(only(V3))]
     #[serde(with = "serde_utils::u64_hex_be")]
-    pub excess_data_gas: u64,
+    pub excess_blob_gas: u64,
 }
 
 impl<T: EthSpec> From<ExecutionPayloadMerge<T>> for JsonExecutionPayloadV1<T> {
@@ -175,8 +175,8 @@ impl<T: EthSpec> From<ExecutionPayloadDeneb<T>> for JsonExecutionPayloadV3<T> {
                 .map(Into::into)
                 .collect::<Vec<_>>()
                 .into(),
-            data_gas_used: payload.data_gas_used,
-            excess_data_gas: payload.excess_data_gas,
+            blob_gas_used: payload.blob_gas_used,
+            excess_blob_gas: payload.excess_blob_gas,
         }
     }
 }
@@ -260,8 +260,8 @@ impl<T: EthSpec> From<JsonExecutionPayloadV3<T>> for ExecutionPayloadDeneb<T> {
                 .map(Into::into)
                 .collect::<Vec<_>>()
                 .into(),
-            data_gas_used: payload.data_gas_used,
-            excess_data_gas: payload.excess_data_gas,
+            blob_gas_used: payload.blob_gas_used,
+            excess_blob_gas: payload.excess_blob_gas,
         }
     }
 }
diff --git a/beacon_node/execution_layer/src/lib.rs b/beacon_node/execution_layer/src/lib.rs
index 8909c8526b6..101a3f1ccd0 100644
--- a/beacon_node/execution_layer/src/lib.rs
+++ b/beacon_node/execution_layer/src/lib.rs
@@ -1913,8 +1913,8 @@ impl<T: EthSpec> ExecutionLayer<T> {
                     block_hash: deneb_block.block_hash,
                     transactions: convert_transactions(deneb_block.transactions)?,
                     withdrawals,
-                    data_gas_used: deneb_block.data_gas_used,
-                    excess_data_gas: deneb_block.excess_data_gas,
+                    blob_gas_used: deneb_block.blob_gas_used,
+                    excess_blob_gas: deneb_block.excess_blob_gas,
                 })
             }
         };
diff --git a/beacon_node/execution_layer/src/test_utils/execution_block_generator.rs b/beacon_node/execution_layer/src/test_utils/execution_block_generator.rs
index e0a9c7f7ec0..82419a829e4 100644
--- a/beacon_node/execution_layer/src/test_utils/execution_block_generator.rs
+++ b/beacon_node/execution_layer/src/test_utils/execution_block_generator.rs
@@ -574,8 +574,8 @@ impl<T: EthSpec> ExecutionBlockGenerator<T> {
                         block_hash: ExecutionBlockHash::zero(),
                         transactions: vec![].into(),
                         withdrawals: pa.withdrawals.clone().into(),
-                        data_gas_used: 0,
-                        excess_data_gas: 0,
+                        blob_gas_used: 0,
+                        excess_blob_gas: 0,
                     }),
                 };
 
diff --git a/consensus/types/src/execution_block_header.rs b/consensus/types/src/execution_block_header.rs
index 3d9791578b9..5ec5484cab4 100644
--- a/consensus/types/src/execution_block_header.rs
+++ b/consensus/types/src/execution_block_header.rs
@@ -26,8 +26,8 @@ use metastruct::metastruct;
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 #[metastruct(mappings(map_execution_block_header_fields_except_withdrawals(exclude(
     withdrawals_root,
-    data_gas_used,
-    excess_data_gas,
+    blob_gas_used,
+    excess_blob_gas,
     parent_beacon_block_root
 )),))]
 pub struct ExecutionBlockHeader {
@@ -48,8 +48,8 @@ pub struct ExecutionBlockHeader {
     pub nonce: Hash64,
     pub base_fee_per_gas: Uint256,
     pub withdrawals_root: Option<Hash256>,
-    pub data_gas_used: Option<u64>,
-    pub excess_data_gas: Option<u64>,
+    pub blob_gas_used: Option<u64>,
+    pub excess_blob_gas: Option<u64>,
     pub parent_beacon_block_root: Option<Hash256>,
 }
 
@@ -59,8 +59,8 @@ impl ExecutionBlockHeader {
         rlp_empty_list_root: Hash256,
         rlp_transactions_root: Hash256,
         rlp_withdrawals_root: Option<Hash256>,
-        rlp_data_gas_used: Option<u64>,
-        rlp_excess_data_gas: Option<u64>,
+        rlp_blob_gas_used: Option<u64>,
+        rlp_excess_blob_gas: Option<u64>,
         rlp_parent_beacon_block_root: Option<Hash256>,
     ) -> Self {
         // Most of these field mappings are defined in EIP-3675 except for `mixHash`, which is
@@ -83,8 +83,8 @@ impl ExecutionBlockHeader {
             nonce: Hash64::zero(),
             base_fee_per_gas: payload.base_fee_per_gas(),
             withdrawals_root: rlp_withdrawals_root,
-            data_gas_used: rlp_data_gas_used,
-            excess_data_gas: rlp_excess_data_gas,
+            blob_gas_used: rlp_blob_gas_used,
+            excess_blob_gas: rlp_excess_blob_gas,
             parent_beacon_block_root: rlp_parent_beacon_block_root,
         }
     }
diff --git a/consensus/types/src/execution_payload.rs b/consensus/types/src/execution_payload.rs
index 354c9960666..41241b21bee 100644
--- a/consensus/types/src/execution_payload.rs
+++ b/consensus/types/src/execution_payload.rs
@@ -85,10 +85,10 @@ pub struct ExecutionPayload<T: EthSpec> {
     pub withdrawals: Withdrawals<T>,
     #[superstruct(only(Deneb), partial_getter(copy))]
     #[serde(with = "serde_utils::quoted_u64")]
-    pub data_gas_used: u64,
+    pub blob_gas_used: u64,
     #[superstruct(only(Deneb), partial_getter(copy))]
     #[serde(with = "serde_utils::quoted_u64")]
-    pub excess_data_gas: u64,
+    pub excess_blob_gas: u64,
 }
 
 impl<'a, T: EthSpec> ExecutionPayloadRef<'a, T> {
diff --git a/consensus/types/src/execution_payload_header.rs b/consensus/types/src/execution_payload_header.rs
index 5cb89f74420..9f68ca940b2 100644
--- a/consensus/types/src/execution_payload_header.rs
+++ b/consensus/types/src/execution_payload_header.rs
@@ -80,11 +80,11 @@ pub struct ExecutionPayloadHeader<T: EthSpec> {
     #[superstruct(only(Deneb))]
     #[serde(with = "serde_utils::quoted_u64")]
     #[superstruct(getter(copy))]
-    pub data_gas_used: u64,
+    pub blob_gas_used: u64,
     #[superstruct(only(Deneb))]
     #[serde(with = "serde_utils::quoted_u64")]
     #[superstruct(getter(copy))]
-    pub excess_data_gas: u64,
+    pub excess_blob_gas: u64,
 }
 
 impl<T: EthSpec> ExecutionPayloadHeader<T> {
@@ -155,8 +155,8 @@ impl<T: EthSpec> ExecutionPayloadHeaderCapella<T> {
             block_hash: self.block_hash,
             transactions_root: self.transactions_root,
             withdrawals_root: self.withdrawals_root,
-            data_gas_used: 0,
-            excess_data_gas: 0,
+            blob_gas_used: 0,
+            excess_blob_gas: 0,
         }
     }
 }
@@ -221,8 +221,8 @@ impl<'a, T: EthSpec> From<&'a ExecutionPayloadDeneb<T>> for ExecutionPayloadHead
             block_hash: payload.block_hash,
             transactions_root: payload.transactions.tree_hash_root(),
             withdrawals_root: payload.withdrawals.tree_hash_root(),
-            data_gas_used: payload.data_gas_used,
-            excess_data_gas: payload.excess_data_gas,
+            blob_gas_used: payload.blob_gas_used,
+            excess_blob_gas: payload.excess_blob_gas,
         }
     }
 }
diff --git a/testing/ef_tests/Makefile b/testing/ef_tests/Makefile
index 9d18fa84dca..a1a71e0b2af 100644
--- a/testing/ef_tests/Makefile
+++ b/testing/ef_tests/Makefile
@@ -1,4 +1,4 @@
-TESTS_TAG := v1.4.0-beta.0
+TESTS_TAG := v1.4.0-beta.1
 TESTS = general minimal mainnet
 TARBALLS = $(patsubst %,%-$(TESTS_TAG).tar.gz,$(TESTS))