diff --git a/beacon_chain/consensus_object_pools/README.md b/beacon_chain/consensus_object_pools/README.md
index 21143ae7a..777b2769c 100644
--- a/beacon_chain/consensus_object_pools/README.md
+++ b/beacon_chain/consensus_object_pools/README.md
@@ -4,8 +4,8 @@ This folder holds the various consensus object pools needed for a blockchain cli
 
 Object in those pools have passed the "gossip validation" filter according
 to specs:
-- blocks: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/phase0/p2p-interface.md#beacon_block
-- aggregate attestations: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/phase0/p2p-interface.md#beacon_aggregate_and_proof
+- blocks: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#beacon_block
+- aggregate attestations: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#beacon_aggregate_and_proof
 - unaggregated attestation: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#beacon_attestation_subnet_id
 - voluntary exits: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#voluntary_exit
 - Attester slashings: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#attester_slashing
diff --git a/beacon_chain/consensus_object_pools/sync_committee_msg_pool.nim b/beacon_chain/consensus_object_pools/sync_committee_msg_pool.nim
index 66e238622..e8e5fc40e 100644
--- a/beacon_chain/consensus_object_pools/sync_committee_msg_pool.nim
+++ b/beacon_chain/consensus_object_pools/sync_committee_msg_pool.nim
@@ -349,7 +349,7 @@ proc produceSyncAggregate*(
 
 proc isEpochLeadTime*(
     pool: SyncCommitteeMsgPool, epochsToSyncPeriod: uint64): bool =
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/altair/validator.md#sync-committee-subnet-stability
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/altair/validator.md#sync-committee-subnet-stability
   # This ensures a uniform distribution without requiring additional state:
   # (1/4)                         = 1/4, 4 slots out
   # (3/4) * (1/3)                 = 1/4, 3 slots out
diff --git a/beacon_chain/gossip_processing/README.md b/beacon_chain/gossip_processing/README.md
index b95c66ec3..809289dfc 100644
--- a/beacon_chain/gossip_processing/README.md
+++ b/beacon_chain/gossip_processing/README.md
@@ -10,7 +10,7 @@ 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.5/specs/phase0/p2p-interface.md#beacon_block
-- Attestations (aggregated): https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/phase0/p2p-interface.md#beacon_aggregate_and_proof
+- Attestations (aggregated): https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#beacon_aggregate_and_proof
 - Attestations (unaggregated): https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#attestation-subnets
 - Voluntary exits: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/phase0/p2p-interface.md#voluntary_exit
 - Proposer slashings: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#proposer_slashing
diff --git a/beacon_chain/libnimbus_lc/libnimbus_lc.h b/beacon_chain/libnimbus_lc/libnimbus_lc.h
index 1c3cb5c65..8fb38f59d 100644
--- a/beacon_chain/libnimbus_lc/libnimbus_lc.h
+++ b/beacon_chain/libnimbus_lc/libnimbus_lc.h
@@ -795,7 +795,7 @@ typedef struct ETHExecutionPayloadHeader ETHExecutionPayloadHeader;
  *
  * @return Execution payload header.
  *
- * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/deneb/beacon-chain.md#executionpayloadheader
+ * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/deneb/beacon-chain.md#executionpayloadheader
  */
 ETH_RESULT_USE_CHECK
 const ETHExecutionPayloadHeader *ETHLightClientHeaderGetExecution(
diff --git a/beacon_chain/libnimbus_lc/libnimbus_lc.nim b/beacon_chain/libnimbus_lc/libnimbus_lc.nim
index f27a6d37d..7f6625ec0 100644
--- a/beacon_chain/libnimbus_lc/libnimbus_lc.nim
+++ b/beacon_chain/libnimbus_lc/libnimbus_lc.nim
@@ -972,7 +972,7 @@ func ETHLightClientHeaderGetExecution(
   ## * Execution payload header.
   ##
   ## See:
-  ## * https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/deneb/beacon-chain.md#executionpayloadheader
+  ## * https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/deneb/beacon-chain.md#executionpayloadheader
   addr header[].execution
 
 func ETHExecutionPayloadHeaderGetParentHash(
diff --git a/beacon_chain/networking/eth2_network.nim b/beacon_chain/networking/eth2_network.nim
index a092ef059..d12df8ea0 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.4/specs/phase0/p2p-interface.md#goodbye
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#goodbye
   DisconnectionReason* = enum
     # might see other values on the wire!
     ClientShutDown = 1
@@ -2536,7 +2536,7 @@ proc subscribeAttestationSubnets*(
 
 proc unsubscribeAttestationSubnets*(
     node: Eth2Node, subnets: AttnetBits, forkDigest: ForkDigest) =
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/phase0/p2p-interface.md#attestations-and-aggregation
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#attestations-and-aggregation
   # Nimbus won't score attestation subnets for now; we just rely on block and
   # aggregate which are more stable and reliable
 
diff --git a/beacon_chain/nimbus_beacon_node.nim b/beacon_chain/nimbus_beacon_node.nim
index 02c3d4952..4da85dcb4 100644
--- a/beacon_chain/nimbus_beacon_node.nim
+++ b/beacon_chain/nimbus_beacon_node.nim
@@ -869,7 +869,7 @@ func forkDigests(node: BeaconNode): auto =
     node.dag.forkDigests.deneb]
   forkDigestsArray
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/phase0/p2p-interface.md#attestation-subnet-subscription
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#attestation-subnet-subscription
 proc updateAttestationSubnetHandlers(node: BeaconNode, slot: Slot) =
   if node.gossipState.card == 0:
     # When disconnected, updateGossipState is responsible for all things
@@ -1644,7 +1644,7 @@ proc installMessageValidators(node: BeaconNode) =
                 MsgSource.gossip, signedBlock)))
 
       # beacon_attestation_{subnet_id}
-      # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/phase0/p2p-interface.md#beacon_attestation_subnet_id
+      # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#beacon_attestation_subnet_id
       for it in SubnetId:
         closureScope:  # Needed for inner `proc`; don't lift it out of loop.
           let subnet_id = it
@@ -1667,7 +1667,7 @@ proc installMessageValidators(node: BeaconNode) =
               MsgSource.gossip, signedAggregateAndProof)))
 
       # attester_slashing
-      # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/phase0/p2p-interface.md#attester_slashing
+      # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#attester_slashing
       node.network.addValidator(
         getAttesterSlashingsTopic(digest), proc (
           attesterSlashing: AttesterSlashing
@@ -1732,7 +1732,7 @@ proc installMessageValidators(node: BeaconNode) =
 
       when consensusFork >= ConsensusFork.Deneb:
         # blob_sidecar_{subnet_id}
-        # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/deneb/p2p-interface.md#blob_sidecar_subnet_id
+        # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/deneb/p2p-interface.md#blob_sidecar_subnet_id
         for it in BlobId:
           closureScope:  # Needed for inner `proc`; don't lift it out of loop.
             let subnet_id = it
diff --git a/beacon_chain/spec/beacon_time.nim b/beacon_chain/spec/beacon_time.nim
index 767955480..0620a24d6 100644
--- a/beacon_chain/spec/beacon_time.nim
+++ b/beacon_chain/spec/beacon_time.nim
@@ -133,13 +133,13 @@ template `+`*(a: TimeDiff, b: Duration): TimeDiff =
 const
   # Offsets from the start of the slot to when the corresponding message should
   # be sent
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/validator.md#attesting
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/validator.md#attesting
   attestationSlotOffset* = TimeDiff(nanoseconds:
     NANOSECONDS_PER_SLOT.int64 div INTERVALS_PER_SLOT)
   # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/validator.md#broadcast-aggregate
   aggregateSlotOffset* = TimeDiff(nanoseconds:
     NANOSECONDS_PER_SLOT.int64  * 2 div INTERVALS_PER_SLOT)
-  # 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.5/specs/altair/validator.md#prepare-sync-committee-message
   syncCommitteeMessageSlotOffset* = TimeDiff(nanoseconds:
     NANOSECONDS_PER_SLOT.int64  div INTERVALS_PER_SLOT)
   # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/altair/validator.md#broadcast-sync-committee-contribution
@@ -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.3/specs/phase0/fork-choice.md#compute_slots_since_epoch_start
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/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 1c9a84e34..dec4c0e4f 100644
--- a/beacon_chain/spec/beaconstate.nim
+++ b/beacon_chain/spec/beaconstate.nim
@@ -82,7 +82,7 @@ func get_validator_churn_limit*(
     count_active_validators(
       state, state.get_current_epoch(), cache) div cfg.CHURN_LIMIT_QUOTIENT)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/deneb/beacon-chain.md#new-get_validator_activation_churn_limit
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/deneb/beacon-chain.md#new-get_validator_activation_churn_limit
 func get_validator_activation_churn_limit*(
       cfg: RuntimeConfig, state: deneb.BeaconState, cache: var StateCache):
     uint64 =
diff --git a/beacon_chain/spec/datatypes/capella.nim b/beacon_chain/spec/datatypes/capella.nim
index 278dc54fc..3a3126761 100644
--- a/beacon_chain/spec/datatypes/capella.nim
+++ b/beacon_chain/spec/datatypes/capella.nim
@@ -31,7 +31,7 @@ const
   # This index is rooted in `BeaconBlockBody`.
   # The first member (`randao_reveal`) is 16, subsequent members +1 each.
   # If there are ever more than 16 members in `BeaconBlockBody`, indices change!
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/ssz/merkle-proofs.md
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/ssz/merkle-proofs.md
   EXECUTION_PAYLOAD_GINDEX* = 25.GeneralizedIndex  # execution_payload
 
 type
diff --git a/beacon_chain/spec/datatypes/constants.nim b/beacon_chain/spec/datatypes/constants.nim
index 30a842b3c..34da45a39 100644
--- a/beacon_chain/spec/datatypes/constants.nim
+++ b/beacon_chain/spec/datatypes/constants.nim
@@ -18,7 +18,7 @@ type
   DomainType* = distinct array[4, byte]
 
 const
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/phase0/p2p-interface.md#constants
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#constants
   NODE_ID_BITS* = 256
 
   # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#configuration
@@ -62,7 +62,7 @@ const
   REORG_PARENT_WEIGHT_THRESHOLD*: uint64 = 160
   REORG_MAX_EPOCHS_SINCE_FINALIZATION* = Epoch(2)
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/deneb/p2p-interface.md#configuration
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/deneb/p2p-interface.md#configuration
   BLOB_SIDECAR_SUBNET_COUNT*: uint64 = 6
 
   # 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 a025a6ee5..8fd1f4d99 100644
--- a/beacon_chain/spec/datatypes/deneb.nim
+++ b/beacon_chain/spec/datatypes/deneb.nim
@@ -30,10 +30,8 @@ from kzg4844 import KzgCommitment, KzgProof
 export json_serialization, base, kzg4844
 
 const
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.2/specs/deneb/polynomial-commitments.md#constants
-  BYTES_PER_FIELD_ELEMENT = 32
-
   # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/deneb/polynomial-commitments.md#constants
+  BYTES_PER_FIELD_ELEMENT = 32
   BLS_MODULUS* = "52435875175126190479447740508185965837690552500527637822603658699938581184513".u256
 
 type
@@ -44,13 +42,13 @@ 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.4/specs/deneb/beacon-chain.md#custom-types
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/deneb/beacon-chain.md#custom-types
   BlobIndex* = uint64
 
   # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/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/v1.4.0-beta.4/specs/deneb/p2p-interface.md#blobsidecar
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/deneb/p2p-interface.md#blobsidecar
   BlobSidecar* = object
     index*: BlobIndex
       ## Index of blob in block
@@ -62,12 +60,12 @@ type
     kzg_commitment_inclusion_proof*:
       array[KZG_COMMITMENT_INCLUSION_PROOF_DEPTH, Eth2Digest]
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.2/specs/deneb/p2p-interface.md#blobidentifier
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/deneb/p2p-interface.md#blobidentifier
   BlobIdentifier* = object
     block_root*: Eth2Digest
     index*: BlobIndex
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/deneb/beacon-chain.md#executionpayload
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/deneb/beacon-chain.md#executionpayload
   ExecutionPayload* = object
     # Execution block header fields
     parent_hash*: Eth2Digest
@@ -108,7 +106,7 @@ type
     blockValue*: Wei
     blobsBundle*: BlobsBundle
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/deneb/beacon-chain.md#executionpayloadheader
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/deneb/beacon-chain.md#executionpayloadheader
   ExecutionPayloadHeader* = object
     # Execution block header fields
     parent_hash*: Eth2Digest
@@ -368,7 +366,7 @@ type
     state_root*: Eth2Digest
     body*: TrustedBeaconBlockBody
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/deneb/beacon-chain.md#beaconblockbody
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/deneb/beacon-chain.md#beaconblockbody
   BeaconBlockBody* = object
     randao_reveal*: ValidatorSig
     eth1_data*: Eth1Data
diff --git a/beacon_chain/spec/forks_light_client.nim b/beacon_chain/spec/forks_light_client.nim
index 60eeb5e53..ca489428f 100644
--- a/beacon_chain/spec/forks_light_client.nim
+++ b/beacon_chain/spec/forks_light_client.nim
@@ -839,7 +839,7 @@ func toAltairLightClientHeader(
   altair.LightClientHeader(
     beacon: blck.message.toBeaconBlockHeader())
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/capella/light-client/full-node.md#modified-block_to_light_client_header
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/capella/light-client/full-node.md#modified-block_to_light_client_header
 func toCapellaLightClientHeader(
     blck:  # `SomeSignedBeaconBlock` doesn't work here (Nim 1.6)
       phase0.SignedBeaconBlock | phase0.TrustedSignedBeaconBlock |
diff --git a/beacon_chain/spec/network.nim b/beacon_chain/spec/network.nim
index a04848a6d..c07397333 100644
--- a/beacon_chain/spec/network.nim
+++ b/beacon_chain/spec/network.nim
@@ -83,7 +83,7 @@ func compute_subnet_for_attestation*(
     (committees_since_epoch_start + committee_index.asUInt64) mod
     ATTESTATION_SUBNET_COUNT)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/validator.md#broadcast-attestation
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/validator.md#broadcast-attestation
 func getAttestationTopic*(forkDigest: ForkDigest,
                           subnetId: SubnetId): string =
   ## For subscribing and unsubscribing to/from a subnet.
@@ -151,7 +151,7 @@ func getDiscoveryForkID*(cfg: RuntimeConfig,
       next_fork_version: current_fork_version,
       next_fork_epoch: FAR_FUTURE_EPOCH)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/altair/p2p-interface.md#transitioning-the-gossip
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/altair/p2p-interface.md#transitioning-the-gossip
 type GossipState* = set[ConsensusFork]
 func getTargetGossipState*(
     epoch, ALTAIR_FORK_EPOCH, BELLATRIX_FORK_EPOCH, CAPELLA_FORK_EPOCH,
diff --git a/beacon_chain/spec/signatures.nim b/beacon_chain/spec/signatures.nim
index e189ff9da..6e0a7c05e 100644
--- a/beacon_chain/spec/signatures.nim
+++ b/beacon_chain/spec/signatures.nim
@@ -88,7 +88,7 @@ func compute_block_signing_root*(
       fork, DOMAIN_BEACON_PROPOSER, epoch, genesis_validators_root)
   compute_signing_root(blck, domain)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/validator.md#signature
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/validator.md#signature
 func get_block_signature*(
     fork: Fork, genesis_validators_root: Eth2Digest, slot: Slot,
     root: Eth2Digest, privkey: ValidatorPrivKey): CookedSig =
@@ -173,7 +173,7 @@ func compute_deposit_signing_root(
     domain = compute_domain(DOMAIN_DEPOSIT, version)
   compute_signing_root(deposit_message, domain)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-alpha.3/specs/phase0/beacon-chain.md#deposits
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/beacon-chain.md#deposits
 func get_deposit_signature*(preset: RuntimeConfig,
                             deposit: DepositData,
                             privkey: ValidatorPrivKey): CookedSig =
diff --git a/beacon_chain/spec/state_transition_block.nim b/beacon_chain/spec/state_transition_block.nim
index 9c0e1aba2..980738b1a 100644
--- a/beacon_chain/spec/state_transition_block.nim
+++ b/beacon_chain/spec/state_transition_block.nim
@@ -715,10 +715,10 @@ func process_withdrawals*(
 
   ok()
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/deneb/beacon-chain.md#kzg_commitment_to_versioned_hash
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/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.3/specs/deneb/beacon-chain.md#blob
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/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 b809edc23..cda32dc86 100644
--- a/beacon_chain/spec/state_transition_epoch.nim
+++ b/beacon_chain/spec/state_transition_epoch.nim
@@ -1168,7 +1168,7 @@ proc process_epoch*(
 
   process_inactivity_updates(cfg, state, info)  # [New in Altair]
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/altair/beacon-chain.md#rewards-and-penalties
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/altair/beacon-chain.md#rewards-and-penalties
   process_rewards_and_penalties(cfg, state, info)  # [Modified in Altair]
 
   # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/beacon-chain.md#registry-updates
diff --git a/beacon_chain/validators/beacon_validators.nim b/beacon_chain/validators/beacon_validators.nim
index cfd7865dc..62a7cf100 100644
--- a/beacon_chain/validators/beacon_validators.nim
+++ b/beacon_chain/validators/beacon_validators.nim
@@ -1868,7 +1868,7 @@ proc handleValidatorDuties*(node: BeaconNode, lastSlot, slot: Slot) {.async.} =
 
   updateValidatorMetrics(node) # the important stuff is done, update the vanity numbers
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/phase0/validator.md#broadcast-aggregate
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/validator.md#broadcast-aggregate
   # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/altair/validator.md#broadcast-sync-committee-contribution
   # Wait 2 / 3 of the slot time to allow messages to propagate, then collect
   # the result in aggregates
diff --git a/beacon_chain/validators/validator_pool.nim b/beacon_chain/validators/validator_pool.nim
index d4259c251..dd571aec7 100644
--- a/beacon_chain/validators/validator_pool.nim
+++ b/beacon_chain/validators/validator_pool.nim
@@ -664,7 +664,7 @@ proc getAggregateAndProofSignature*(v: AttachedValidator,
         fork, genesis_validators_root, aggregate_and_proof)
       await v.signData(request)
 
-# 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.5/specs/altair/validator.md#prepare-sync-committee-message
 proc getSyncCommitteeMessage*(v: AttachedValidator,
                               fork: Fork,
                               genesis_validators_root: Eth2Digest,
@@ -695,7 +695,7 @@ proc getSyncCommitteeMessage*(v: AttachedValidator,
       )
     )
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/altair/validator.md#aggregation-selection
+# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/altair/validator.md#aggregation-selection
 proc getSyncCommitteeSelectionProof*(v: AttachedValidator, fork: Fork,
                                      genesis_validators_root: Eth2Digest,
                                      slot: Slot,
diff --git a/docs/block_flow.md b/docs/block_flow.md
index e39325ebb..a02d3ab90 100644
--- a/docs/block_flow.md
+++ b/docs/block_flow.md
@@ -6,7 +6,7 @@ This is a WIP document to explain the beacon block flows.
 
 Important distinction:
 - We distinguish block `validation` which is defined in the P2P specs:
-  https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/phase0/p2p-interface.md#beacon_block.
+  https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#beacon_block.
   A validated block can be forwarded on gossipsub.
 - and we distinguish `verification` which is defined in consensus specs:
   https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/beacon-chain.md#block-processing
diff --git a/tests/testblockutil.nim b/tests/testblockutil.nim
index 11b44af1f..a827f4ed1 100644
--- a/tests/testblockutil.nim
+++ b/tests/testblockutil.nim
@@ -268,7 +268,7 @@ func makeAttestationData*(
     "Computed epoch was " & $slot.epoch &
     "  while the state current_epoch was " & $current_epoch
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.3/specs/phase0/validator.md#attestation-data
+  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/validator.md#attestation-data
   AttestationData(
     slot: slot,
     index: committee_index.uint64,