diff --git a/specs/merge/beacon-chain.md b/specs/merge/beacon-chain.md
index be79cf5b5..a93076001 100644
--- a/specs/merge/beacon-chain.md
+++ b/specs/merge/beacon-chain.md
@@ -47,6 +47,7 @@ We define the following Python custom types for type hinting and readability:
 | Name | SSZ equivalent | Description |
 | - | - | - |
 | `OpaqueTransaction` | `ByteList[MAX_BYTES_PER_OPAQUE_TRANSACTION]` | a byte-list containing a single [typed transaction envelope](https://eips.ethereum.org/EIPS/eip-2718#opaque-byte-array-rather-than-an-rlp-array) structured as `TransactionType \|\| TransactionPayload` |
+| `Hash32` | `Bytes32` | a 256-bit hash |
 
 ## Constants
 
@@ -98,8 +99,8 @@ The execution payload included in a `BeaconBlockBody`.
 
 ```python
 class ExecutionPayload(Container):
-    block_hash: Bytes32  # Hash of execution block
-    parent_hash: Bytes32
+    block_hash: Hash32  # Hash of execution block
+    parent_hash: Hash32
     coinbase: Bytes20
     state_root: Bytes32
     number: uint64
@@ -118,8 +119,8 @@ The execution payload header included in a `BeaconState`.
 
 ```python
 class ExecutionPayloadHeader(Container):
-    block_hash: Bytes32  # Hash of execution block
-    parent_hash: Bytes32
+    block_hash: Hash32  # Hash of execution block
+    parent_hash: Hash32
     coinbase: Bytes20
     state_root: Bytes32
     number: uint64
diff --git a/specs/merge/fork-choice.md b/specs/merge/fork-choice.md
index 647a663c2..df45bedd1 100644
--- a/specs/merge/fork-choice.md
+++ b/specs/merge/fork-choice.md
@@ -30,7 +30,7 @@ This is the modification of the fork choice according to the executable beacon c
 
 ```python
 class PowBlock(Container):
-    block_hash: Bytes32
+    block_hash: Hash32
     is_processed: boolean
     is_valid: boolean
     total_difficulty: uint256
@@ -38,7 +38,7 @@ class PowBlock(Container):
 
 #### `get_pow_block`
 
-Let `get_pow_block(hash: Bytes32) -> PowBlock` be the function that given the hash of the PoW block returns its data.
+Let `get_pow_block(hash: Hash32) -> PowBlock` be the function that given the hash of the PoW block returns its data.
 
 *Note*: The `eth_getBlockByHash` JSON-RPC method does not distinguish invalid blocks from blocks that haven't been processed yet. Either extending this existing method or implementing a new one is required.
 
diff --git a/specs/merge/validator.md b/specs/merge/validator.md
index 5b26a21dd..42fe7adcf 100644
--- a/specs/merge/validator.md
+++ b/specs/merge/validator.md
@@ -48,7 +48,7 @@ Let `get_pow_chain_head() -> PowBlock` be the function that returns the head of
 
 ###### `produce_execution_payload`
 
-Let `produce_execution_payload(parent_hash: Bytes32) -> ExecutionPayload` be the function that produces new instance of execution payload.
+Let `produce_execution_payload(parent_hash: Hash32) -> ExecutionPayload` be the function that produces new instance of execution payload.
 The body of this function is implementation dependent.
 
 * Set `block.body.execution_payload = get_execution_payload(state)` where: