diff --git a/eth/common/eth_types.nim b/eth/common/eth_types.nim
index 1e2226a..7ebd89b 100644
--- a/eth/common/eth_types.nim
+++ b/eth/common/eth_types.nim
@@ -98,7 +98,7 @@ type
     value*         : UInt256
     payload*       : Blob
     accessList*    : AccessList           # EIP-2930
-    maxFeePerDataGas*: GasInt             # EIP-4844
+    maxFeePerBlobGas*: GasInt             # EIP-4844
     versionedHashes*: VersionedHashes     # EIP-4844
     networkPayload*: NetworkPayload       # EIP-4844
     V*             : int64
@@ -141,8 +141,8 @@ type
     # `baseFee` is the get/set of `fee`
     fee*:             Option[UInt256]   # EIP-1559
     withdrawalsRoot*: Option[Hash256]   # EIP-4895
-    dataGasUsed*:     Option[uint64]    # EIP-4844
-    excessDataGas*:   Option[uint64]    # EIP-4844
+    blobGasUsed*:     Option[uint64]    # EIP-4844
+    excessBlobGas*:   Option[uint64]    # EIP-4844
 
   BlockBody* = object
     transactions*:  seq[Transaction]
diff --git a/eth/common/eth_types_rlp.nim b/eth/common/eth_types_rlp.nim
index df88612..058769b 100644
--- a/eth/common/eth_types_rlp.nim
+++ b/eth/common/eth_types_rlp.nim
@@ -125,7 +125,7 @@ proc appendTxEip4844Signed(w: var RlpWriter, tx: Transaction) =
   w.append(tx.value)
   w.append(tx.payload)
   w.append(tx.accessList)
-  w.append(tx.maxFeePerDataGas)
+  w.append(tx.maxFeePerBlobGas)
   w.append(tx.versionedHashes)
   w.append(tx.V)
   w.append(tx.R)
@@ -224,7 +224,7 @@ proc readTxEip4844Signed(rlp: var Rlp, tx: var Transaction) =
   rlp.read(tx.value)
   rlp.read(tx.payload)
   rlp.read(tx.accessList)
-  rlp.read(tx.maxFeePerDataGas)
+  rlp.read(tx.maxFeePerBlobGas)
   rlp.read(tx.versionedHashes)
   rlp.read(tx.V)
   rlp.read(tx.R)
diff --git a/eth/common/transaction.nim b/eth/common/transaction.nim
index 528f76a..a5caaea 100644
--- a/eth/common/transaction.nim
+++ b/eth/common/transaction.nim
@@ -98,7 +98,7 @@ func rlpEncodeEip4844(tx: Transaction): auto =
   w.append(tx.value)
   w.append(tx.payload)
   w.append(tx.accessList)
-  w.append(tx.maxFeePerDataGas)
+  w.append(tx.maxFeePerBlobGas)
   w.append(tx.versionedHashes)
   w.finish()
 
diff --git a/eth/rlp/writer.nim b/eth/rlp/writer.nim
index 7687f11..d1cc97f 100644
--- a/eth/rlp/writer.nim
+++ b/eth/rlp/writer.nim
@@ -243,7 +243,7 @@ macro genOptionalFieldsValidation(obj: untyped, T: type, num: static[int]): unty
 
   # generate something like
   when false:
-    if obj.excessDataGas.isSome:
+    if obj.excessBlobGas.isSome:
       doAssert(obj.withdrawalsRoot.isSome, "withdrawalsRoot expected")
       doAssert(obj.fee.isSome, "fee expected")
     if obj.withdrawalsRoot.isSome:
diff --git a/tests/common/test_eip4844.nim b/tests/common/test_eip4844.nim
index e974772..9af8958 100644
--- a/tests/common/test_eip4844.nim
+++ b/tests/common/test_eip4844.nim
@@ -120,7 +120,7 @@ proc tx7(i: int): Transaction =
     maxFee:              10.GasInt,
     accessList:          accesses,
     versionedHashes:     @[digest],
-    maxFeePerDataGas:    10000000.GasInt,
+    maxFeePerBlobGas:    10000000.GasInt,
   )
 
 proc tx8(i: int): Transaction =
@@ -137,7 +137,7 @@ proc tx8(i: int): Transaction =
     maxFee:              10.GasInt,
     accessList:          accesses,
     versionedHashes:     @[digest],
-    maxFeePerDataGas:    10000000.GasInt,
+    maxFeePerBlobGas:    10000000.GasInt,
   )
 
 template roundTrip(txFunc: untyped, i: int) =
diff --git a/tests/rlp/test_common.nim b/tests/rlp/test_common.nim
index 886911a..e3cbd06 100644
--- a/tests/rlp/test_common.nim
+++ b/tests/rlp/test_common.nim
@@ -116,8 +116,8 @@ proc suite2() =
       doTest h
 
       # EIP-4844
-      h.dataGasUsed = some 1234'u64
-      h.excessDataGas = some 1234'u64
+      h.blobGasUsed = some 1234'u64
+      h.excessBlobGas = some 1234'u64
       doTest h
 
 suite1()
diff --git a/tests/rlp/test_rlp_codec.nim b/tests/rlp/test_rlp_codec.nim
index ec80a9f..f5b99ef 100644
--- a/tests/rlp/test_rlp_codec.nim
+++ b/tests/rlp/test_rlp_codec.nim
@@ -61,28 +61,28 @@ suite "BlockHeader roundtrip test":
     expect AssertionDefect:
       roundTrip(h)
 
-  test "Header + none(baseFee) + some(withdrawalsRoot) + some(excessDataGas)":
+  test "Header + none(baseFee) + some(withdrawalsRoot) + some(excessBlobGas)":
     let h = BlockHeader(
       withdrawalsRoot: some(Hash256()),
-      dataGasUsed: some(1'u64),
-      excessDataGas: some(1'u64)
+      blobGasUsed: some(1'u64),
+      excessBlobGas: some(1'u64)
     )
     expect AssertionDefect:
       roundTrip(h)
 
-  test "Header + none(baseFee) + none(withdrawalsRoot) + some(excessDataGas)":
+  test "Header + none(baseFee) + none(withdrawalsRoot) + some(excessBlobGas)":
     let h = BlockHeader(
-      dataGasUsed: some(1'u64),
-      excessDataGas: some(1'u64)
+      blobGasUsed: some(1'u64),
+      excessBlobGas: some(1'u64)
     )
     expect AssertionDefect:
       roundTrip(h)
 
-  test "Header + some(baseFee) + none(withdrawalsRoot) + some(excessDataGas)":
+  test "Header + some(baseFee) + none(withdrawalsRoot) + some(excessBlobGas)":
     let h = BlockHeader(
       fee: some(2.u256),
-      dataGasUsed: some(1'u64),
-      excessDataGas: some(1'u64)
+      blobGasUsed: some(1'u64),
+      excessBlobGas: some(1'u64)
     )
     expect AssertionDefect:
       roundTrip(h)
@@ -94,12 +94,12 @@ suite "BlockHeader roundtrip test":
     )
     roundTrip(h)
 
-  test "Header + some(baseFee) + some(withdrawalsRoot) + some(excessDataGas)":
+  test "Header + some(baseFee) + some(withdrawalsRoot) + some(excessBlobGas)":
     let h = BlockHeader(
       fee: some(2.u256),
       withdrawalsRoot: some(Hash256()),
-      dataGasUsed: some(1'u64),
-      excessDataGas: some(1'u64)
+      blobGasUsed: some(1'u64),
+      excessBlobGas: some(1'u64)
     )
     roundTrip(h)
 
@@ -177,8 +177,8 @@ type
     nonce*:           BlockNonce
     fee*:             Opt[UInt256]
     withdrawalsRoot*: Opt[Hash256]
-    dataGasUsed*:     Opt[GasInt]
-    excessDataGas*:   Opt[GasInt]
+    blobGasUsed*:     Opt[GasInt]
+    excessBlobGas*:   Opt[GasInt]
 
   BlockBodyOpt* = object
     transactions*:  seq[Transaction]