diff --git a/beacon_chain/beacon_chain_db_immutable.nim b/beacon_chain/beacon_chain_db_immutable.nim
index cde1cd32d..5c462715b 100644
--- a/beacon_chain/beacon_chain_db_immutable.nim
+++ b/beacon_chain/beacon_chain_db_immutable.nim
@@ -127,7 +127,7 @@ type
     current_sync_committee*: SyncCommittee     # [New in Altair]
     next_sync_committee*: SyncCommittee        # [New in Altair]
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/bellatrix/beacon-chain.md#beaconstate
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/bellatrix/beacon-chain.md#beaconstate
   # Memory-representation-equivalent to a Bellatrix BeaconState for in-place SSZ
   # reading and writing
   BellatrixBeaconStateNoImmutableValidators* = object
diff --git a/beacon_chain/consensus_object_pools/attestation_pool.nim b/beacon_chain/consensus_object_pools/attestation_pool.nim
index c5cb4c7cd..555382371 100644
--- a/beacon_chain/consensus_object_pools/attestation_pool.nim
+++ b/beacon_chain/consensus_object_pools/attestation_pool.nim
@@ -739,7 +739,7 @@ func getAggregatedAttestation*(pool: var AttestationPool,
                                index: CommitteeIndex): Opt[Attestation] =
   ## Select the attestation that has the most votes going for it in the given
   ## slot/index
-  ## https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/validator.md#construct-aggregate
+  ## https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/validator.md#construct-aggregate
   let candidateIdx = pool.candidateIdx(slot)
   if candidateIdx.isNone:
     return Opt.none(Attestation)
diff --git a/beacon_chain/consensus_object_pools/block_dag.nim b/beacon_chain/consensus_object_pools/block_dag.nim
index b7e375619..b18c7daf5 100644
--- a/beacon_chain/consensus_object_pools/block_dag.nim
+++ b/beacon_chain/consensus_object_pools/block_dag.nim
@@ -134,7 +134,7 @@ func link*(parent, child: BlockRef) =
 func get_ancestor*(blck: BlockRef, slot: Slot,
     maxDepth = 100'i64 * 365 * 24 * 60 * 60 div SECONDS_PER_SLOT.int):
     BlockRef =
-  ## https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/fork-choice.md#get_ancestor
+  ## https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/fork-choice.md#get_ancestor
   ## Return the most recent block as of the time at `slot` that not more recent
   ## than `blck` itself
   if isNil(blck): return nil
diff --git a/beacon_chain/consensus_object_pools/blockchain_dag.nim b/beacon_chain/consensus_object_pools/blockchain_dag.nim
index d601aa59f..fc5cd5efd 100644
--- a/beacon_chain/consensus_object_pools/blockchain_dag.nim
+++ b/beacon_chain/consensus_object_pools/blockchain_dag.nim
@@ -2613,7 +2613,7 @@ func aggregateAll*(
     # Aggregation spec requires non-empty collection
     # - https://tools.ietf.org/html/draft-irtf-cfrg-bls-signature-04
     # Consensus specs require at least one attesting index in attestation
-    # - https://github.com/ethereum/consensus-specs/blob/v1.4.0-alpha.3/specs/phase0/beacon-chain.md#is_valid_indexed_attestation
+    # - https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/beacon-chain.md#is_valid_indexed_attestation
     return err("aggregate: no attesting keys")
 
   let
diff --git a/beacon_chain/consensus_object_pools/spec_cache.nim b/beacon_chain/consensus_object_pools/spec_cache.nim
index dd3b01257..f803e74c6 100644
--- a/beacon_chain/consensus_object_pools/spec_cache.nim
+++ b/beacon_chain/consensus_object_pools/spec_cache.nim
@@ -191,7 +191,7 @@ func makeAttestationData*(
       epoch: current_epoch,
       root: epoch_boundary_block.blck.root))
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/validator.md#validator-assignments
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/validator.md#validator-assignments
 iterator get_committee_assignments*(
     shufflingRef: ShufflingRef, validator_indices: HashSet[ValidatorIndex]):
     tuple[committee_index: CommitteeIndex,
diff --git a/beacon_chain/el/el_manager.nim b/beacon_chain/el/el_manager.nim
index 928056057..4c0d3517b 100644
--- a/beacon_chain/el/el_manager.nim
+++ b/beacon_chain/el/el_manager.nim
@@ -423,7 +423,7 @@ template toGaugeValue(x: Quantity): int64 =
 #  doAssert SECONDS_PER_ETH1_BLOCK * cfg.ETH1_FOLLOW_DISTANCE < GENESIS_DELAY,
 #             "Invalid configuration: GENESIS_DELAY is set too low"
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/validator.md#get_eth1_data
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/validator.md#get_eth1_data
 func compute_time_at_slot(genesis_time: uint64, slot: Slot): uint64 =
   genesis_time + slot * SECONDS_PER_SLOT
 
diff --git a/beacon_chain/gossip_processing/README.md b/beacon_chain/gossip_processing/README.md
index 83f6eccba..cd1cf4613 100644
--- a/beacon_chain/gossip_processing/README.md
+++ b/beacon_chain/gossip_processing/README.md
@@ -9,7 +9,7 @@ This folder holds a collection of modules to:
 
 Gossip validation is different from consensus verification in particular for blocks.
 
-- Blocks: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/p2p-interface.md#beacon_block
+- Blocks: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/p2p-interface.md#beacon_block
 - Attestations (aggregated): https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/p2p-interface.md#beacon_aggregate_and_proof
 - Attestations (unaggregated): https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/p2p-interface.md#attestation-subnets
 - Voluntary exits: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/p2p-interface.md#voluntary_exit
diff --git a/beacon_chain/gossip_processing/gossip_validation.nim b/beacon_chain/gossip_processing/gossip_validation.nim
index 939f4eec5..3d58cf22e 100644
--- a/beacon_chain/gossip_processing/gossip_validation.nim
+++ b/beacon_chain/gossip_processing/gossip_validation.nim
@@ -276,7 +276,7 @@ template validateBeaconBlockBellatrix(
   #
   # `is_merge_transition_complete(state)` tests for
   # `state.latest_execution_payload_header != ExecutionPayloadHeader()`, while
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/bellatrix/beacon-chain.md#block-processing
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/bellatrix/beacon-chain.md#block-processing
   # shows that `state.latest_execution_payload_header` being default or not is
   # exactly equivalent to whether that block's execution payload is default or
   # not, so test cached block information rather than reconstructing a state.
@@ -1012,7 +1012,7 @@ proc validateAttesterSlashing*(
 
   ok()
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/phase0/p2p-interface.md#proposer_slashing
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/p2p-interface.md#proposer_slashing
 proc validateProposerSlashing*(
     pool: ValidatorChangePool, proposer_slashing: ProposerSlashing):
     Result[void, ValidationError] =
diff --git a/beacon_chain/libnimbus_lc/libnimbus_lc.h b/beacon_chain/libnimbus_lc/libnimbus_lc.h
index f9bb665ab..1c00d71bc 100644
--- a/beacon_chain/libnimbus_lc/libnimbus_lc.h
+++ b/beacon_chain/libnimbus_lc/libnimbus_lc.h
@@ -149,11 +149,11 @@ typedef struct ETHBeaconState ETHBeaconState;
  *         representation - If successful.
  * @return `NULL` - If the given `sszBytes` is malformed.
  *
- * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.2/specs/phase0/beacon-chain.md#beaconstate
- * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.2/specs/altair/beacon-chain.md#beaconstate
- * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.2/specs/bellatrix/beacon-chain.md#beaconstate
- * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.2/specs/capella/beacon-chain.md#beaconstate
- * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.2/configs/README.md
+ * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/beacon-chain.md#beaconstate
+ * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/altair/beacon-chain.md#beaconstate
+ * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/bellatrix/beacon-chain.md#beaconstate
+ * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/capella/beacon-chain.md#beaconstate
+ * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/configs/README.md
  */
 ETH_RESULT_USE_CHECK
 ETHBeaconState *ETHBeaconStateCreateFromSsz(
@@ -595,7 +595,7 @@ const ETHLightClientHeader *ETHLightClientStoreGetFinalizedHeader(
  * @return Whether or not the next sync committee is currently known.
  *
  * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/altair/light-client/sync-protocol.md#is_next_sync_committee_known
- * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/altair/light-client/light-client.md
+ * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/altair/light-client/light-client.md
  */
 ETH_RESULT_USE_CHECK
 bool ETHLightClientStoreIsNextSyncCommitteeKnown(const ETHLightClientStore *store);
@@ -669,7 +669,7 @@ void ETHLightClientHeaderDestroy(ETHLightClientHeader *header);
  *
  * @return Pointer to a copy of the given header's beacon block root.
  *
- * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/beacon-chain.md#hash_tree_root
+ * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/beacon-chain.md#hash_tree_root
  */
 ETH_RESULT_USE_CHECK
 ETHRoot *ETHLightClientHeaderCopyBeaconRoot(
diff --git a/beacon_chain/networking/eth2_network.nim b/beacon_chain/networking/eth2_network.nim
index f7e2be389..dd99abb3f 100644
--- a/beacon_chain/networking/eth2_network.nim
+++ b/beacon_chain/networking/eth2_network.nim
@@ -174,7 +174,7 @@ type
   MounterProc* = proc(network: Eth2Node) {.gcsafe, raises: [CatchableError].}
   MessageContentPrinter* = proc(msg: pointer): string {.gcsafe, raises: [].}
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/p2p-interface.md#goodbye
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/p2p-interface.md#goodbye
   DisconnectionReason* = enum
     # might see other values on the wire!
     ClientShutDown = 1
@@ -2263,7 +2263,7 @@ proc getPersistentNetKeys*(
 func gossipId(
     data: openArray[byte], phase0Prefix, topic: string): seq[byte] =
   # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/p2p-interface.md#topics-and-messages
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/altair/p2p-interface.md#topics-and-messages
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/altair/p2p-interface.md#topics-and-messages
   const MESSAGE_DOMAIN_VALID_SNAPPY = [0x01'u8, 0x00, 0x00, 0x00]
   let messageDigest = withEth2Hash:
     h.update(MESSAGE_DOMAIN_VALID_SNAPPY)
diff --git a/beacon_chain/spec/beacon_time.nim b/beacon_chain/spec/beacon_time.nim
index f9281c73b..46fd49110 100644
--- a/beacon_chain/spec/beacon_time.nim
+++ b/beacon_chain/spec/beacon_time.nim
@@ -188,7 +188,7 @@ func epoch*(slot: Slot): Epoch = # aka compute_epoch_at_slot
   if slot == FAR_FUTURE_SLOT: FAR_FUTURE_EPOCH
   else: Epoch(slot div SLOTS_PER_EPOCH)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/fork-choice.md#compute_slots_since_epoch_start
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/fork-choice.md#compute_slots_since_epoch_start
 func since_epoch_start*(slot: Slot): uint64 = # aka compute_slots_since_epoch_start
   ## How many slots since the beginning of the epoch (`[0..SLOTS_PER_EPOCH-1]`)
   (slot mod SLOTS_PER_EPOCH)
diff --git a/beacon_chain/spec/beaconstate.nim b/beacon_chain/spec/beaconstate.nim
index 5c1499a36..19a01c58c 100644
--- a/beacon_chain/spec/beaconstate.nim
+++ b/beacon_chain/spec/beaconstate.nim
@@ -142,7 +142,7 @@ func initiate_validator_exit*(
 
 from ./datatypes/deneb import BeaconState
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-alpha.3/specs/phase0/beacon-chain.md#slash_validator
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/beacon-chain.md#slash_validator
 # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/altair/beacon-chain.md#modified-slash_validator
 # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/bellatrix/beacon-chain.md#modified-slash_validator
 func get_slashing_penalty*(state: ForkyBeaconState,
@@ -342,7 +342,7 @@ func is_eligible_for_activation_queue*(validator: Validator): bool =
   validator.activation_eligibility_epoch == FAR_FUTURE_EPOCH and
     validator.effective_balance == MAX_EFFECTIVE_BALANCE
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-alpha.3/specs/phase0/beacon-chain.md#is_eligible_for_activation
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/beacon-chain.md#is_eligible_for_activation
 func is_eligible_for_activation*(
     state: ForkyBeaconState, validator: Validator): bool =
   ## Check if ``validator`` is eligible for activation.
@@ -1342,7 +1342,7 @@ func upgrade_to_capella*(cfg: RuntimeConfig, pre: bellatrix.BeaconState):
     # historical_summaries initialized to correct default automatically
   )
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-alpha.1/specs/deneb/fork.md#upgrading-the-state
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/deneb/fork.md#upgrading-the-state
 func upgrade_to_deneb*(cfg: RuntimeConfig, pre: capella.BeaconState):
     ref deneb.BeaconState =
   let
diff --git a/beacon_chain/spec/datatypes/altair.nim b/beacon_chain/spec/datatypes/altair.nim
index 89e9de5a9..4dfafa3f1 100644
--- a/beacon_chain/spec/datatypes/altair.nim
+++ b/beacon_chain/spec/datatypes/altair.nim
@@ -102,7 +102,7 @@ type
     pubkeys*: HashArray[Limit SYNC_COMMITTEE_SIZE, ValidatorPubKey]
     aggregate_pubkey*: ValidatorPubKey
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/altair/validator.md#synccommitteemessage
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/altair/validator.md#synccommitteemessage
   SyncCommitteeMessage* = object
     slot*: Slot
       ## Slot to which this contribution pertains
@@ -456,7 +456,7 @@ type
 
   SyncnetBits* = BitArray[SYNC_COMMITTEE_SUBNET_COUNT]
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/altair/p2p-interface.md#metadata
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/altair/p2p-interface.md#metadata
   MetaData* = object
     seq_number*: uint64
     attnets*: AttnetBits
diff --git a/beacon_chain/spec/datatypes/constants.nim b/beacon_chain/spec/datatypes/constants.nim
index 703198c66..70c111193 100644
--- a/beacon_chain/spec/datatypes/constants.nim
+++ b/beacon_chain/spec/datatypes/constants.nim
@@ -16,7 +16,7 @@ type
   DomainType* = distinct array[4, byte]
 
 const
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/p2p-interface.md#constants
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/p2p-interface.md#constants
   NODE_ID_BITS* = 256
 
   # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/p2p-interface.md#configuration
diff --git a/beacon_chain/spec/datatypes/deneb.nim b/beacon_chain/spec/datatypes/deneb.nim
index d25c71f08..b6d85b636 100644
--- a/beacon_chain/spec/datatypes/deneb.nim
+++ b/beacon_chain/spec/datatypes/deneb.nim
@@ -47,13 +47,13 @@ type
   # current spec doesn't ever SSZ-serialize it or hash_tree_root it
   VersionedHash* = array[32, byte]
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/deneb/beacon-chain.md#custom-types
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/deneb/beacon-chain.md#custom-types
   BlobIndex* = uint64
 
   # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.2/specs/deneb/polynomial-commitments.md#custom-types
   Blob* = array[BYTES_PER_FIELD_ELEMENT * FIELD_ELEMENTS_PER_BLOB, byte]
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/deneb/p2p-interface.md#blobsidecar
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/deneb/p2p-interface.md#blobsidecar
   BlobSidecar* = object
     block_root*: Eth2Digest
     index*: BlobIndex
@@ -110,7 +110,7 @@ type
     proofs*:seq[KZGProof]
     blobs*: Blobs
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/deneb/beacon-chain.md#executionpayloadheader
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/deneb/beacon-chain.md#executionpayloadheader
   ExecutionPayloadHeader* = object
     # Execution block header fields
     parent_hash*: Eth2Digest
diff --git a/beacon_chain/spec/keystore.nim b/beacon_chain/spec/keystore.nim
index dbeb55f57..68ae49ee7 100644
--- a/beacon_chain/spec/keystore.nim
+++ b/beacon_chain/spec/keystore.nim
@@ -1385,7 +1385,7 @@ proc createWallet*(kdfKind: KdfKind,
     crypto: crypto,
     nextAccount: nextAccount.get(0))
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/validator.md#bls_withdrawal_prefix
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/validator.md#bls_withdrawal_prefix
 func makeWithdrawalCredentials*(k: ValidatorPubKey): Eth2Digest =
   var bytes = eth2digest(k.toRaw())
   bytes.data[0] = BLS_WITHDRAWAL_PREFIX.uint8
diff --git a/beacon_chain/spec/signatures.nim b/beacon_chain/spec/signatures.nim
index 1e456db62..1aa318537 100644
--- a/beacon_chain/spec/signatures.nim
+++ b/beacon_chain/spec/signatures.nim
@@ -44,7 +44,7 @@ func compute_slot_signing_root*(
       fork, DOMAIN_SELECTION_PROOF, epoch, genesis_validators_root)
   compute_signing_root(slot, domain)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/validator.md#aggregation-selection
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/validator.md#aggregation-selection
 func get_slot_signature*(
     fork: Fork, genesis_validators_root: Eth2Digest, slot: Slot,
     privkey: ValidatorPrivKey): CookedSig =
@@ -97,7 +97,7 @@ func compute_blob_signing_root(
                         genesis_validators_root)
   compute_signing_root(blob, domain)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/validator.md#signature
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/validator.md#signature
 func get_block_signature*(
     fork: Fork, genesis_validators_root: Eth2Digest, slot: Slot,
     root: Eth2Digest, privkey: ValidatorPrivKey): CookedSig =
@@ -106,7 +106,7 @@ func get_block_signature*(
 
   blsSign(privkey, signing_root.data)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-alpha.3/specs/deneb/validator.md#constructing-the-signedblobsidecars
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/deneb/validator.md#constructing-the-signedblobsidecars
 proc get_blob_sidecar_signature*(
   fork: Fork, genesis_validators_root: Eth2Digest, slot: Slot,
     blob: BlindedBlobSidecar | BlobSidecar, privkey: ValidatorPrivKey):
@@ -147,7 +147,7 @@ func compute_aggregate_and_proof_signing_root*(
       fork, DOMAIN_AGGREGATE_AND_PROOF, epoch, genesis_validators_root)
   compute_signing_root(aggregate_and_proof, domain)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/validator.md#broadcast-aggregate
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/validator.md#broadcast-aggregate
 func get_aggregate_and_proof_signature*(fork: Fork, genesis_validators_root: Eth2Digest,
                                         aggregate_and_proof: AggregateAndProof,
                                         privkey: ValidatorPrivKey): CookedSig =
@@ -175,7 +175,7 @@ func compute_attestation_signing_root*(
       fork, DOMAIN_BEACON_ATTESTER, epoch, genesis_validators_root)
   compute_signing_root(attestation_data, domain)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/validator.md#aggregate-signature
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/validator.md#aggregate-signature
 func get_attestation_signature*(
     fork: Fork, genesis_validators_root: Eth2Digest,
     attestation_data: AttestationData,
@@ -265,7 +265,7 @@ proc verify_voluntary_exit_signature*(
 
     blsVerify(pubkey, signing_root.data, signature)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/altair/validator.md#prepare-sync-committee-message
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/altair/validator.md#prepare-sync-committee-message
 func compute_sync_committee_message_signing_root*(
     fork: Fork, genesis_validators_root: Eth2Digest,
     slot: Slot, beacon_block_root: Eth2Digest): Eth2Digest =
diff --git a/beacon_chain/spec/state_transition_block.nim b/beacon_chain/spec/state_transition_block.nim
index 102661665..21b027e56 100644
--- a/beacon_chain/spec/state_transition_block.nim
+++ b/beacon_chain/spec/state_transition_block.nim
@@ -747,7 +747,7 @@ func tx_peek_blob_versioned_hashes(opaque_tx: Transaction):
 # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/deneb/beacon-chain.md#kzg_commitment_to_versioned_hash
 func kzg_commitment_to_versioned_hash*(
     kzg_commitment: KzgCommitment): VersionedHash =
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/deneb/beacon-chain.md#blob
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/deneb/beacon-chain.md#blob
   const VERSIONED_HASH_VERSION_KZG = 0x01'u8
 
   var res: VersionedHash
diff --git a/beacon_chain/spec/state_transition_epoch.nim b/beacon_chain/spec/state_transition_epoch.nim
index 1af914092..8a1316a21 100644
--- a/beacon_chain/spec/state_transition_epoch.nim
+++ b/beacon_chain/spec/state_transition_epoch.nim
@@ -1152,7 +1152,7 @@ proc process_epoch*(
 
   info.init(state)
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/altair/beacon-chain.md#justification-and-finalization
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/altair/beacon-chain.md#justification-and-finalization
   # [Modified in Altair]
   process_justification_and_finalization(state, info.balances, flags)
 
diff --git a/beacon_chain/validators/slashing_protection_v2.nim b/beacon_chain/validators/slashing_protection_v2.nim
index c6202f88c..4f39d5770 100644
--- a/beacon_chain/validators/slashing_protection_v2.nim
+++ b/beacon_chain/validators/slashing_protection_v2.nim
@@ -33,7 +33,7 @@ import
 # - https://notes.ethereum.org/@djrtwo/Bkn3zpwxB#Validator-responsibilities
 #
 # Phase 0 spec - Honest Validator - how to avoid slashing
-# - https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/phase0/validator.md#how-to-avoid-slashing
+# - https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/validator.md#how-to-avoid-slashing
 #
 # In-depth reading on slashing conditions
 #
diff --git a/beacon_chain/validators/validator_pool.nim b/beacon_chain/validators/validator_pool.nim
index 5ed1b52d0..345712e47 100644
--- a/beacon_chain/validators/validator_pool.nim
+++ b/beacon_chain/validators/validator_pool.nim
@@ -640,7 +640,7 @@ proc getBlobSignature*(v: AttachedValidator, fork: Fork,
     of ValidatorKind.Remote:
       return SignatureResult.err("web3signer not supported for blobs")
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/validator.md#aggregate-signature
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/validator.md#aggregate-signature
 proc getAttestationSignature*(v: AttachedValidator, fork: Fork,
                               genesis_validators_root: Eth2Digest,
                               data: AttestationData
diff --git a/docs/attestation_flow.md b/docs/attestation_flow.md
index f0a483ba5..14ce970ca 100644
--- a/docs/attestation_flow.md
+++ b/docs/attestation_flow.md
@@ -52,7 +52,7 @@ These GossipSub topics are used to listen for attestations:
 
 The attestations are then validated by `validateAttestation()` or `validateAggregate()` in either `attestationValidator()` or `aggregateValidator()` according to the P2P specs.
 - https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/p2p-interface.md#beacon_aggregate_and_proof
-- https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/p2p-interface.md#attestation-subnets
+- https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/p2p-interface.md#attestation-subnets
 
 Finally, valid attestations are added to the local `attestationPool`.
 Attestations are dropped in case of an error.
diff --git a/tests/consensus_spec/fixtures_utils.nim b/tests/consensus_spec/fixtures_utils.nim
index e62c780f3..468237872 100644
--- a/tests/consensus_spec/fixtures_utils.nim
+++ b/tests/consensus_spec/fixtures_utils.nim
@@ -75,7 +75,7 @@ type
     rewards*: List[uint64, Limit VALIDATOR_REGISTRY_LIMIT]
     penalties*: List[uint64, Limit VALIDATOR_REGISTRY_LIMIT]
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/validator.md#eth1block
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/validator.md#eth1block
   Eth1Block* = object
     timestamp*: uint64
     deposit_root*: Eth2Digest