diff --git a/beacon_chain/consensus_object_pools/block_dag.nim b/beacon_chain/consensus_object_pools/block_dag.nim
index a6fd68b4e..a5a3efc45 100644
--- a/beacon_chain/consensus_object_pools/block_dag.nim
+++ b/beacon_chain/consensus_object_pools/block_dag.nim
@@ -128,7 +128,7 @@ 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/v1.3.0-rc.1/specs/phase0/fork-choice.md#get_ancestor
+  ## https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.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/spec/beaconstate.nim b/beacon_chain/spec/beaconstate.nim
index 9cb00e564..dddc24448 100644
--- a/beacon_chain/spec/beaconstate.nim
+++ b/beacon_chain/spec/beaconstate.nim
@@ -72,7 +72,7 @@ func compute_activation_exit_epoch*(epoch: Epoch): Epoch =
   ## ``epoch`` take effect.
   epoch + 1 + MAX_SEED_LOOKAHEAD
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#get_validator_churn_limit
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#get_validator_churn_limit
 func get_validator_churn_limit*(
       cfg: RuntimeConfig, state: ForkyBeaconState, cache: var StateCache):
     uint64 =
@@ -558,7 +558,7 @@ func get_base_reward(
     state.validators[index].effective_balance div EFFECTIVE_BALANCE_INCREMENT
   increments * base_reward_per_increment
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#attestations
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#attestations
 proc check_attestation*(
     state: ForkyBeaconState, attestation: SomeAttestation, flags: UpdateFlags,
     cache: var StateCache): Result[void, cstring] =
diff --git a/beacon_chain/spec/datatypes/altair.nim b/beacon_chain/spec/datatypes/altair.nim
index bac0f1f53..5d81516f1 100644
--- a/beacon_chain/spec/datatypes/altair.nim
+++ b/beacon_chain/spec/datatypes/altair.nim
@@ -89,7 +89,7 @@ type
     sync_committee_bits*: BitArray[SYNC_COMMITTEE_SIZE]
     sync_committee_signature*: TrustedSig
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/altair/beacon-chain.md#synccommittee
+  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/altair/beacon-chain.md#synccommittee
   SyncCommittee* = object
     pubkeys*: HashArray[Limit SYNC_COMMITTEE_SIZE, ValidatorPubKey]
     aggregate_pubkey*: ValidatorPubKey
@@ -157,7 +157,7 @@ type
   NextSyncCommitteeBranch* =
     array[log2trunc(NEXT_SYNC_COMMITTEE_INDEX), Eth2Digest]
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/altair/light-client/sync-protocol.md#lightclientheader
+  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/altair/light-client/sync-protocol.md#lightclientheader
   LightClientHeader* = object
     beacon*: BeaconBlockHeader
       ## Beacon block header
diff --git a/beacon_chain/spec/datatypes/base.nim b/beacon_chain/spec/datatypes/base.nim
index 0abd95c29..171d47a63 100644
--- a/beacon_chain/spec/datatypes/base.nim
+++ b/beacon_chain/spec/datatypes/base.nim
@@ -235,7 +235,7 @@ type
     current_version*: Version
     genesis_validators_root*: Eth2Digest
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#checkpoint
+  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#checkpoint
   Checkpoint* = object
     epoch*: Epoch
     root*: Eth2Digest
@@ -362,7 +362,7 @@ type
     message*: VoluntaryExit
     signature*: TrustedSig
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#beaconblockheader
+  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#beaconblockheader
   BeaconBlockHeader* = object
     slot*: Slot
     proposer_index*: uint64 # `ValidatorIndex` after validation
diff --git a/beacon_chain/spec/datatypes/bellatrix.nim b/beacon_chain/spec/datatypes/bellatrix.nim
index 8add8d842..71c7b90a0 100644
--- a/beacon_chain/spec/datatypes/bellatrix.nim
+++ b/beacon_chain/spec/datatypes/bellatrix.nim
@@ -165,7 +165,7 @@ type
     data*: BeaconState
     root*: Eth2Digest # hash_tree_root(data)
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#beaconblock
+  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#beaconblock
   BeaconBlock* = object
     ## For each slot, a proposer is chosen from the validator pool to propose
     ## a new block. Once the block as been proposed, it is transmitted to
diff --git a/beacon_chain/spec/datatypes/capella.nim b/beacon_chain/spec/datatypes/capella.nim
index cebb7db8c..fc6aeb0ca 100644
--- a/beacon_chain/spec/datatypes/capella.nim
+++ b/beacon_chain/spec/datatypes/capella.nim
@@ -190,7 +190,7 @@ type
     LightClientBootstrap |
     SomeLightClientUpdate
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/altair/light-client/sync-protocol.md#lightclientstore
+  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/altair/light-client/sync-protocol.md#lightclientstore
   LightClientStore* = object
     finalized_header*: LightClientHeader
       ## Header that is finalized
diff --git a/beacon_chain/spec/datatypes/constants.nim b/beacon_chain/spec/datatypes/constants.nim
index cc51439a2..6b25b3586 100644
--- a/beacon_chain/spec/datatypes/constants.nim
+++ b/beacon_chain/spec/datatypes/constants.nim
@@ -31,12 +31,12 @@ const
   DOMAIN_AGGREGATE_AND_PROOF* = DomainType([byte 0x06, 0x00, 0x00, 0x00])
   DOMAIN_APPLICATION_MASK* = DomainType([byte 0x00, 0x00, 0x00, 0x01])
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/altair/beacon-chain.md#domain-types
+  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/altair/beacon-chain.md#domain-types
   DOMAIN_SYNC_COMMITTEE* = DomainType([byte 0x07, 0x00, 0x00, 0x00])
   DOMAIN_SYNC_COMMITTEE_SELECTION_PROOF* = DomainType([byte 0x08, 0x00, 0x00, 0x00])
   DOMAIN_CONTRIBUTION_AND_PROOF* = DomainType([byte 0x09, 0x00, 0x00, 0x00])
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.2/specs/capella/beacon-chain.md#domain-types
+  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/capella/beacon-chain.md#domain-types
   DOMAIN_BLS_TO_EXECUTION_CHANGE* = DomainType([byte 0x0a, 0x00, 0x00, 0x00])
 
   # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/bellatrix/beacon-chain.md#transition-settings
diff --git a/beacon_chain/spec/datatypes/deneb.nim b/beacon_chain/spec/datatypes/deneb.nim
index 9fa541667..11d5190a6 100644
--- a/beacon_chain/spec/datatypes/deneb.nim
+++ b/beacon_chain/spec/datatypes/deneb.nim
@@ -35,7 +35,7 @@ const
   # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/deneb/beacon-chain.md#blob
   BLOB_TX_TYPE* = 0x05'u8
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/deneb/polynomial-commitments.md#constants
+  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/deneb/polynomial-commitments.md#constants
   BLS_MODULUS* = "52435875175126190479447740508185965837690552500527637822603658699938581184513".u256
   # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/deneb/p2p-interface.md#configuration
   MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS* = 4096'u64
diff --git a/beacon_chain/spec/datatypes/phase0.nim b/beacon_chain/spec/datatypes/phase0.nim
index f173113cf..783b7bdd4 100644
--- a/beacon_chain/spec/datatypes/phase0.nim
+++ b/beacon_chain/spec/datatypes/phase0.nim
@@ -22,7 +22,7 @@ import
 export base
 
 type
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#beaconstate
+  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#beaconstate
   BeaconState* = object
     # Versioning
     genesis_time*: uint64
@@ -215,7 +215,7 @@ type
     deposits*: List[Deposit, Limit MAX_DEPOSITS]
     voluntary_exits*: List[TrustedSignedVoluntaryExit, Limit MAX_VOLUNTARY_EXITS]
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#signedbeaconblock
+  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#signedbeaconblock
   SignedBeaconBlock* = object
     message*: BeaconBlock
     signature*: ValidatorSig
diff --git a/beacon_chain/spec/forks.nim b/beacon_chain/spec/forks.nim
index b30a9268e..b1a01f7b2 100644
--- a/beacon_chain/spec/forks.nim
+++ b/beacon_chain/spec/forks.nim
@@ -975,7 +975,7 @@ func readSszForkedSignedBeaconBlock*(
   withBlck(result):
     readSszBytes(data, blck)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#compute_fork_data_root
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#compute_fork_data_root
 func compute_fork_data_root*(current_version: Version,
     genesis_validators_root: Eth2Digest): Eth2Digest =
   ## Return the 32-byte fork data root for the ``current_version`` and
diff --git a/beacon_chain/spec/helpers.nim b/beacon_chain/spec/helpers.nim
index f9bae7ab9..86cf6a704 100644
--- a/beacon_chain/spec/helpers.nim
+++ b/beacon_chain/spec/helpers.nim
@@ -93,7 +93,7 @@ func get_active_validator_indices_len*(
   withState(state):
     get_active_validator_indices_len(forkyState.data, epoch)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#get_current_epoch
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#get_current_epoch
 func get_current_epoch*(state: ForkyBeaconState): Epoch =
   ## Return the current epoch.
   state.slot.epoch
@@ -166,7 +166,7 @@ func get_domain*(
   ## of a message.
   get_domain(state.fork, domain_type, epoch, state.genesis_validators_root)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#compute_signing_root
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#compute_signing_root
 func compute_signing_root*(ssz_object: auto, domain: Eth2Domain): Eth2Digest =
   ## Return the signing root of an object by calculating the root of the
   ## object-domain tree.
@@ -194,12 +194,12 @@ func get_seed*(state: ForkyBeaconState, epoch: Epoch, domain_type: DomainType):
       epoch + EPOCHS_PER_HISTORICAL_VECTOR - MIN_SEED_LOOKAHEAD - 1).data
   eth2digest(seed_input)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/altair/beacon-chain.md#add_flag
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/altair/beacon-chain.md#add_flag
 func add_flag*(flags: ParticipationFlags, flag_index: int): ParticipationFlags =
   let flag = ParticipationFlags(1'u8 shl flag_index)
   flags or flag
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/altair/beacon-chain.md#has_flag
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/altair/beacon-chain.md#has_flag
 func has_flag*(flags: ParticipationFlags, flag_index: int): bool =
   let flag = ParticipationFlags(1'u8 shl flag_index)
   (flags and flag) == flag
@@ -212,7 +212,7 @@ template is_sync_committee_update*(update: SomeForkyLightClientUpdate): bool =
   else:
     false
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/altair/light-client/sync-protocol.md#is_finality_update
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/altair/light-client/sync-protocol.md#is_finality_update
 template is_finality_update*(update: SomeForkyLightClientUpdate): bool =
   when update is SomeForkyLightClientUpdateWithFinality:
     update.finality_branch != default(typeof(update.finality_branch))
diff --git a/beacon_chain/spec/state_transition.nim b/beacon_chain/spec/state_transition.nim
index a94df67ea..87eb940d2 100644
--- a/beacon_chain/spec/state_transition.nim
+++ b/beacon_chain/spec/state_transition.nim
@@ -6,7 +6,7 @@
 # at your option. This file may not be copied, modified, or distributed except according to those terms.
 
 # State transition, as described in
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#beacon-chain-state-transition-function
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#beacon-chain-state-transition-function
 #
 # The entry point is `state_transition` which is at the bottom of the file!
 #
@@ -123,7 +123,7 @@ func clear_epoch_from_cache(cache: var StateCache, epoch: Epoch) =
   for slot in epoch.slots():
     cache.beacon_proposer_indices.del slot
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#beacon-chain-state-transition-function
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#beacon-chain-state-transition-function
 proc advance_slot(
     cfg: RuntimeConfig,
     state: var ForkyBeaconState, previous_slot_state_root: Eth2Digest,
diff --git a/beacon_chain/spec/state_transition_block.nim b/beacon_chain/spec/state_transition_block.nim
index c8a20474a..ba4776ac8 100644
--- a/beacon_chain/spec/state_transition_block.nim
+++ b/beacon_chain/spec/state_transition_block.nim
@@ -202,7 +202,7 @@ func is_slashable_attestation_data(
     (data_1.source.epoch < data_2.source.epoch and
      data_2.target.epoch < data_1.target.epoch)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#attester-slashings
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#attester-slashings
 proc check_attester_slashing*(
        state: ForkyBeaconState,
        attester_slashing: SomeAttesterSlashing,
@@ -410,7 +410,7 @@ proc process_bls_to_execution_change*(
 
   ok()
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#operations
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#operations
 # https://github.com/ethereum/consensus-specs/blob/v1.3.0-alpha.1/specs/capella/beacon-chain.md#modified-process_operations
 proc process_operations(cfg: RuntimeConfig,
                         state: var ForkyBeaconState,
@@ -756,7 +756,7 @@ func process_blob_kzg_commitments(
   else:
     return err("process_blob_kzg_commitments: verify_kzg_commitments_against_transactions failed")
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/deneb/fork-choice.md#validate_blobs
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/deneb/fork-choice.md#validate_blobs
 proc validate_blobs*(expected_kzg_commitments: seq[KZGCommitment],
                      blobs: seq[KzgBlob],
                      proofs: seq[KZGProof]):
diff --git a/beacon_chain/spec/state_transition_epoch.nim b/beacon_chain/spec/state_transition_epoch.nim
index 8f8bc7875..bd23e35ce 100644
--- a/beacon_chain/spec/state_transition_epoch.nim
+++ b/beacon_chain/spec/state_transition_epoch.nim
@@ -662,7 +662,7 @@ func get_unslashed_participating_increment*(
 func get_active_increments*(info: altair.EpochInfo | bellatrix.BeaconState): Gwei =
   info.balances.current_epoch div EFFECTIVE_BALANCE_INCREMENT
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/altair/beacon-chain.md#get_flag_index_deltas
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/altair/beacon-chain.md#get_flag_index_deltas
 iterator get_flag_index_deltas*(
     state: altair.BeaconState | bellatrix.BeaconState | capella.BeaconState |
            deneb.BeaconState,
@@ -904,7 +904,7 @@ func get_slashing_penalty*(validator: Validator,
                           adjusted_total_slashing_balance
   penalty_numerator div total_balance * increment
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#slashings
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#slashings
 # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/altair/beacon-chain.md#slashings
 # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/bellatrix/beacon-chain.md#slashings
 func process_slashings*(state: var ForkyBeaconState, total_balance: Gwei) =
@@ -1188,7 +1188,7 @@ proc process_epoch*(
 
   info.init(state)
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#justification-and-finalization
+  # https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#justification-and-finalization
   process_justification_and_finalization(state, info.balances, flags)
 
   # state.slot hasn't been incremented yet.
diff --git a/beacon_chain/spec/validator.nim b/beacon_chain/spec/validator.nim
index 99b83e3cb..ad5fd5b2a 100644
--- a/beacon_chain/spec/validator.nim
+++ b/beacon_chain/spec/validator.nim
@@ -183,7 +183,7 @@ iterator get_committee_indices*(committee_count_per_slot: uint64): CommitteeInde
     let committee_index = CommitteeIndex.init(idx).expect("value clamped")
     yield committee_index
 
-# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.3/specs/phase0/beacon-chain.md#compute_committee
+# https://github.com/ethereum/consensus-specs/blob/v1.3.0-rc.5/specs/phase0/beacon-chain.md#compute_committee
 func compute_committee_slice*(
     active_validators, index, count: uint64): Slice[int] =
   doAssert active_validators <= ValidatorIndex.high.uint64