diff --git a/web3/engine_api_callsigs.nim b/web3/engine_api_callsigs.nim
index 405dab7..b11b3d7 100644
--- a/web3/engine_api_callsigs.nim
+++ b/web3/engine_api_callsigs.nim
@@ -1,7 +1,8 @@
-# https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.6/src/engine/specification.md#core
+# https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.7/src/engine/specification.md#core
 
 import ethtypes, engine_api_types
 
 proc engine_newPayloadV1(payload: ExecutionPayloadV1): PayloadStatusV1
 proc engine_forkchoiceUpdatedV1(forkchoiceState: ForkchoiceStateV1, payloadAttributes: Option[PayloadAttributesV1]): ForkchoiceUpdatedResponse
 proc engine_getPayloadV1(payloadId: PayloadID): ExecutionPayloadV1
+proc engine_exchangeTransitionConfigurationV1(transitionConfiguration: TransitionConfigurationV1): TransitionConfigurationV1
diff --git a/web3/engine_api_types.nim b/web3/engine_api_types.nim
index 133b92e..7c82642 100644
--- a/web3/engine_api_types.nim
+++ b/web3/engine_api_types.nim
@@ -1,18 +1,19 @@
 import
   std/options,
+  stint,
   ethtypes
 
 export
   ethtypes
 
 type
-  # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.6/src/engine/specification.md#payloadattributesv1
+  # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.7/src/engine/specification.md#payloadattributesv1
   PayloadAttributesV1* = object
     timestamp*: Quantity
     random*: FixedBytes[32]
     suggestedFeeRecipient*: Address
 
-  # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.6/src/engine/specification.md#payloadstatusv1
+  # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.7/src/engine/specification.md#payloadstatusv1
   PayloadExecutionStatus* {.pure.} = enum
     valid                  = "VALID"
     invalid                = "INVALID"
@@ -26,21 +27,27 @@ type
     latestValidHash*: Option[BlockHash]
     validationError*: Option[string]
 
-  # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.6/src/engine/specification.md#forkchoicestatev1
+  # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.7/src/engine/specification.md#forkchoicestatev1
   ForkchoiceStateV1* = object
     headBlockHash*: BlockHash
     safeBlockHash*: BlockHash
     finalizedBlockHash*: BlockHash
 
-  # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.6/src/engine/specification.md#response-1
+  # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.7/src/engine/specification.md#response-1
   PayloadID* = FixedBytes[8]
 
   ForkchoiceUpdatedResponse* = object
     payloadStatus*: PayloadStatusV1
     payloadId*: Option[PayloadID]
 
+  # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.7/src/engine/specification.md#transitionconfigurationv1
+  TransitionConfigurationV1* = object
+    terminalTotalDifficulty*: Uint256
+    terminalBlockHash*: BlockHash
+    terminalBlockNumber*: Quantity
+
 const
-  # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.6/src/engine/specification.md#errors
+  # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.7/src/engine/specification.md#errors
   engineApiParseError* = - 32700
   engineApiInvalidRequest* = -32600
   engineApiMethodNotFound* = -32601
diff --git a/web3/ethtypes.nim b/web3/ethtypes.nim
index bea9bdb..c8e2cb1 100644
--- a/web3/ethtypes.nim
+++ b/web3/ethtypes.nim
@@ -203,7 +203,7 @@ type
 
   TypedTransaction* = distinct seq[byte]
 
-  # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.6/src/engine/specification.md#executionpayloadv1
+  # https://github.com/ethereum/execution-apis/blob/v1.0.0-alpha.7/src/engine/specification.md#executionpayloadv1
   ExecutionPayloadV1* = object
     parentHash*: BlockHash
     feeRecipient*: Address