diff --git a/beacon_chain/consensus_object_pools/README.md b/beacon_chain/consensus_object_pools/README.md
index 0d66a0072..87dae049a 100644
--- a/beacon_chain/consensus_object_pools/README.md
+++ b/beacon_chain/consensus_object_pools/README.md
@@ -8,7 +8,7 @@ to specs:
 - 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/specs/phase0/p2p-interface.md#voluntary_exit
-- Attester slashings: https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/p2p-interface.md#attester_slashing
+- Attester slashings: https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/phase0/p2p-interface.md#attester_slashing
 - Proposer slashings: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#proposer_slashing
 
 After "gossip validation" the consensus objects can be rebroadcasted as they are optimistically good, however for internal processing further verification is needed.
diff --git a/beacon_chain/consensus_object_pools/spec_cache.nim b/beacon_chain/consensus_object_pools/spec_cache.nim
index 525166fba..6e9e8a92d 100644
--- a/beacon_chain/consensus_object_pools/spec_cache.nim
+++ b/beacon_chain/consensus_object_pools/spec_cache.nim
@@ -283,7 +283,7 @@ func makeAttestationData*(
 
   doAssert current_epoch == epochRef.epoch
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/validator.md#attestation-data
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/phase0/validator.md#attestation-data
   AttestationData(
     slot: slot,
     index: committee_index.asUInt64,
diff --git a/beacon_chain/deposits.nim b/beacon_chain/deposits.nim
index f59777058..4e96d121d 100644
--- a/beacon_chain/deposits.nim
+++ b/beacon_chain/deposits.nim
@@ -220,7 +220,7 @@ proc restValidatorExit(config: BeaconNodeConf) {.async.} =
            reason = exc.msg
     quit 1
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.6/specs/phase0/beacon-chain.md#voluntary-exits
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/phase0/beacon-chain.md#voluntary-exits
   # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.0/specs/deneb/beacon-chain.md#modified-process_voluntary_exit
   let signingFork = try:
     let response = await client.getSpecVC()
diff --git a/beacon_chain/gossip_processing/gossip_validation.nim b/beacon_chain/gossip_processing/gossip_validation.nim
index 10f06a561..88723ba68 100644
--- a/beacon_chain/gossip_processing/gossip_validation.nim
+++ b/beacon_chain/gossip_processing/gossip_validation.nim
@@ -93,7 +93,7 @@ func check_propagation_slot_range(
     return ok(msgSlot)
 
   if consensusFork < ConsensusFork.Deneb:
-    # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/phase0/p2p-interface.md#configuration
+    # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/phase0/p2p-interface.md#configuration
     # The spec value of ATTESTATION_PROPAGATION_SLOT_RANGE is 32, but it can
     # retransmit attestations on the cusp of being out of spec, and which by
     # the time they reach their destination might be out of spec.
diff --git a/beacon_chain/libnimbus_lc/libnimbus_lc.h b/beacon_chain/libnimbus_lc/libnimbus_lc.h
index 5067ba48a..1ea9f8353 100644
--- a/beacon_chain/libnimbus_lc/libnimbus_lc.h
+++ b/beacon_chain/libnimbus_lc/libnimbus_lc.h
@@ -150,7 +150,7 @@ typedef struct ETHBeaconState ETHBeaconState;
  * @return `NULL` - If the given `sszBytes` is malformed.
  *
  * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/beacon-chain.md#beaconstate
- * @see https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/altair/beacon-chain.md#beaconstate
+ * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/altair/beacon-chain.md#beaconstate
  * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/bellatrix/beacon-chain.md#beaconstate
  * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.3/specs/capella/beacon-chain.md#beaconstate
  * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/configs/README.md
@@ -672,7 +672,7 @@ 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.6/specs/phase0/beacon-chain.md#hash_tree_root
+ * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/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 400564ab8..84b7060ac 100644
--- a/beacon_chain/networking/eth2_network.nim
+++ b/beacon_chain/networking/eth2_network.nim
@@ -2610,7 +2610,7 @@ proc broadcastAttestation*(
     attestation: phase0.Attestation | electra.Attestation):
     Future[SendResult] {.async: (raises: [CancelledError], raw: true).} =
   # Regardless of the contents of the attestation,
-  # https://github.com/ethereum/consensus-specs/blob/v1.3.0/specs/altair/p2p-interface.md#transitioning-the-gossip
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/altair/p2p-interface.md#transitioning-the-gossip
   # implies that pre-fork, messages using post-fork digests might be
   # ignored, whilst post-fork, there is effectively a seen_ttl-based
   # timer unsubscription point that means no new pre-fork-forkdigest
diff --git a/beacon_chain/spec/beacon_time.nim b/beacon_chain/spec/beacon_time.nim
index 861cbf272..a62bd2577 100644
--- a/beacon_chain/spec/beacon_time.nim
+++ b/beacon_chain/spec/beacon_time.nim
@@ -133,7 +133,7 @@ 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/specs/phase0/validator.md#attesting
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.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/specs/phase0/validator.md#broadcast-aggregate
diff --git a/beacon_chain/spec/beaconstate.nim b/beacon_chain/spec/beaconstate.nim
index fc7f758c1..62fb65f2f 100644
--- a/beacon_chain/spec/beaconstate.nim
+++ b/beacon_chain/spec/beaconstate.nim
@@ -317,7 +317,7 @@ func get_slashing_penalty*(
   else:
     {.fatal: "invalid BeaconState type".}
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.7/specs/phase0/beacon-chain.md#slash_validator
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/phase0/beacon-chain.md#slash_validator
 # https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/altair/beacon-chain.md#modified-slash_validator
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/bellatrix/beacon-chain.md#modified-slash_validator
 func get_whistleblower_reward*(
@@ -332,7 +332,7 @@ func get_whistleblower_reward*(
   validator_effective_balance div WHISTLEBLOWER_REWARD_QUOTIENT_ELECTRA
 
 # https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/beacon-chain.md#slash_validator
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/altair/beacon-chain.md#modified-slash_validator
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/altair/beacon-chain.md#modified-slash_validator
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/bellatrix/beacon-chain.md#modified-slash_validator
 func get_proposer_reward(state: ForkyBeaconState, whistleblower_reward: Gwei): Gwei =
   when state is phase0.BeaconState:
@@ -741,7 +741,7 @@ func check_attestation_target_epoch(
 
 # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.6/specs/phase0/beacon-chain.md#attestations
 # https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/altair/beacon-chain.md#modified-process_attestation
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.3/specs/deneb/beacon-chain.md#modified-process_attestation
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/deneb/beacon-chain.md#modified-process_attestation
 func check_attestation_inclusion(
     consensusFork: static ConsensusFork, attestation_slot: Slot,
     current_slot: Slot): Result[void, cstring] =
diff --git a/beacon_chain/spec/datatypes/constants.nim b/beacon_chain/spec/datatypes/constants.nim
index 0c0a5e723..486e353ee 100644
--- a/beacon_chain/spec/datatypes/constants.nim
+++ b/beacon_chain/spec/datatypes/constants.nim
@@ -55,7 +55,7 @@ const
   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/v1.5.0-alpha.3/specs/capella/beacon-chain.md#domain-types
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.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/82133085a1295e93394ebdf71df8f2f6e0962588/specs/electra/beacon-chain.md#domains
diff --git a/beacon_chain/spec/datatypes/deneb.nim b/beacon_chain/spec/datatypes/deneb.nim
index e64daf51a..0be277905 100644
--- a/beacon_chain/spec/datatypes/deneb.nim
+++ b/beacon_chain/spec/datatypes/deneb.nim
@@ -158,7 +158,7 @@ type
       ## Execution payload header corresponding to `beacon.body_root` (from Capella onward)
     execution_branch*: capella.ExecutionBranch
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/altair/light-client/sync-protocol.md#lightclientbootstrap
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/altair/light-client/sync-protocol.md#lightclientbootstrap
   LightClientBootstrap* = object
     header*: LightClientHeader
       ## Header matching the requested beacon block root
@@ -325,7 +325,7 @@ type
     data*: BeaconState
     root*: Eth2Digest # hash_tree_root(data)
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.6/specs/phase0/beacon-chain.md#beaconblock
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.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/electra.nim b/beacon_chain/spec/datatypes/electra.nim
index 976c01cf6..49255000b 100644
--- a/beacon_chain/spec/datatypes/electra.nim
+++ b/beacon_chain/spec/datatypes/electra.nim
@@ -53,7 +53,7 @@ const
   NEXT_SYNC_COMMITTEE_GINDEX_ELECTRA* = 87.GeneralizedIndex
 
 type
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.3/specs/electra/beacon-chain.md#depositrequest
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/electra/beacon-chain.md#depositrequest
   DepositRequest* = object
     pubkey*: ValidatorPubKey
     withdrawal_credentials*: Eth2Digest
@@ -215,7 +215,7 @@ type
       ## Execution payload header corresponding to `beacon.body_root` (from Capella onward)
     execution_branch*: capella.ExecutionBranch
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.3/specs/altair/light-client/sync-protocol.md#lightclientbootstrap
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/altair/light-client/sync-protocol.md#lightclientbootstrap
   LightClientBootstrap* = object
     header*: LightClientHeader
       ## Header matching the requested beacon block root
@@ -224,7 +224,7 @@ type
       ## Current sync committee corresponding to `header.beacon.state_root`
     current_sync_committee_branch*: CurrentSyncCommitteeBranch
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/altair/light-client/sync-protocol.md#lightclientupdate
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/altair/light-client/sync-protocol.md#lightclientupdate
   LightClientUpdate* = object
     attested_header*: LightClientHeader
       ## Header attested to by the sync committee
diff --git a/beacon_chain/spec/helpers.nim b/beacon_chain/spec/helpers.nim
index c8dabc2f8..ec37c1f85 100644
--- a/beacon_chain/spec/helpers.nim
+++ b/beacon_chain/spec/helpers.nim
@@ -211,7 +211,7 @@ func get_seed*(state: ForkyBeaconState, epoch: Epoch, domain_type: DomainType):
     epoch + EPOCHS_PER_HISTORICAL_VECTOR - MIN_SEED_LOOKAHEAD - 1)
   state.get_seed(epoch, domain_type, mix)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/altair/beacon-chain.md#add_flag
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/altair/beacon-chain.md#add_flag
 func add_flag*(flags: ParticipationFlags, flag_index: TimelyFlag): ParticipationFlags =
   let flag = ParticipationFlags(1'u8 shl ord(flag_index))
   flags or flag
@@ -266,7 +266,7 @@ template is_sync_committee_update*(update: SomeForkyLightClientUpdate): bool =
   else:
     false
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/altair/light-client/sync-protocol.md#is_finality_update
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.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 !=
diff --git a/beacon_chain/spec/network.nim b/beacon_chain/spec/network.nim
index 3b95d8458..049ddbab1 100644
--- a/beacon_chain/spec/network.nim
+++ b/beacon_chain/spec/network.nim
@@ -67,7 +67,7 @@ func getAggregateAndProofsTopic*(forkDigest: ForkDigest): string =
 func getBlsToExecutionChangeTopic*(forkDigest: ForkDigest): string =
   eth2Prefix(forkDigest) & topicBlsToExecutionChangeSuffix
 
-# 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/v1.5.0-alpha.5/specs/phase0/validator.md#broadcast-attestation
 func compute_subnet_for_attestation*(
     committees_per_slot: uint64, slot: Slot, committee_index: CommitteeIndex):
     SubnetId =
diff --git a/beacon_chain/spec/state_transition_block.nim b/beacon_chain/spec/state_transition_block.nim
index b5ed6bcc1..06fb9f4f0 100644
--- a/beacon_chain/spec/state_transition_block.nim
+++ b/beacon_chain/spec/state_transition_block.nim
@@ -249,7 +249,7 @@ proc check_attester_slashing*(
   withState(state):
     check_attester_slashing(forkyState.data, attester_slashing, flags)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.6/specs/phase0/beacon-chain.md#attester-slashings
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/phase0/beacon-chain.md#attester-slashings
 proc process_attester_slashing*(
     cfg: RuntimeConfig,
     state: var ForkyBeaconState,
@@ -389,7 +389,7 @@ func process_deposit_request*(
       amount: deposit_request.amount,
       signature: deposit_request.signature), flags)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/beacon-chain.md#voluntary-exits
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/phase0/beacon-chain.md#voluntary-exits
 # https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/deneb/beacon-chain.md#modified-process_voluntary_exit
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.0/specs/electra/beacon-chain.md#updated-process_voluntary_exit
 proc check_voluntary_exit*(
diff --git a/beacon_chain/spec/state_transition_epoch.nim b/beacon_chain/spec/state_transition_epoch.nim
index 95bf42366..7ec1fe15f 100644
--- a/beacon_chain/spec/state_transition_epoch.nim
+++ b/beacon_chain/spec/state_transition_epoch.nim
@@ -661,7 +661,7 @@ func get_attestation_deltas(
         info.validators[proposer_index].delta.add(
           proposer_delta.get()[1])
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/altair/beacon-chain.md#get_base_reward
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/altair/beacon-chain.md#get_base_reward
 func get_base_reward_increment*(
     state: altair.BeaconState | bellatrix.BeaconState | capella.BeaconState |
            deneb.BeaconState | electra.BeaconState,
@@ -1017,13 +1017,13 @@ func get_adjusted_total_slashing_balance*(
   min(sum(state.slashings.data) * multiplier, total_balance)
 
 # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.7/specs/phase0/beacon-chain.md#slashings
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/altair/beacon-chain.md#slashings
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/altair/beacon-chain.md#slashings
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/bellatrix/beacon-chain.md#slashings
 func slashing_penalty_applies*(validator: Validator, epoch: Epoch): bool =
   validator.slashed and
   epoch + EPOCHS_PER_SLASHINGS_VECTOR div 2 == validator.withdrawable_epoch
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.7/specs/phase0/beacon-chain.md#slashings
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/phase0/beacon-chain.md#slashings
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/altair/beacon-chain.md#slashings
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/bellatrix/beacon-chain.md#slashings
 func get_slashing_penalty*(validator: Validator,
diff --git a/beacon_chain/spec/validator.nim b/beacon_chain/spec/validator.nim
index 43bc65a5f..c8d4e7fa2 100644
--- a/beacon_chain/spec/validator.nim
+++ b/beacon_chain/spec/validator.nim
@@ -21,7 +21,7 @@ const
   TOTAL_SIZE = PIVOT_VIEW_SIZE + POSITION_WINDOW_SIZE
 
 # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.6/specs/phase0/beacon-chain.md#compute_shuffled_index
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.6/specs/phase0/beacon-chain.md#compute_committee
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/phase0/beacon-chain.md#compute_committee
 # Port of https://github.com/protolambda/zrnt/blob/v0.14.0/eth2/beacon/shuffle.go
 func shuffle_list*(input: var seq[ValidatorIndex], seed: Eth2Digest) =
   let list_size = input.lenu64
diff --git a/beacon_chain/validators/validator_pool.nim b/beacon_chain/validators/validator_pool.nim
index 6d13117ba..edfd5d026 100644
--- a/beacon_chain/validators/validator_pool.nim
+++ b/beacon_chain/validators/validator_pool.nim
@@ -522,7 +522,7 @@ proc signData(v: AttachedValidator,
   else:
     v.signWithDistributedKey(request)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/validator.md#signature
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/phase0/validator.md#signature
 proc getBlockSignature*(v: AttachedValidator, fork: Fork,
                         genesis_validators_root: Eth2Digest, slot: Slot,
                         block_root: Eth2Digest,
@@ -843,7 +843,7 @@ proc getContributionAndProofSignature*(v: AttachedValidator, fork: Fork,
       fork, genesis_validators_root, contribution_and_proof)
     await v.signData(request)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/validator.md#randao-reveal
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/phase0/validator.md#randao-reveal
 proc getEpochSignature*(v: AttachedValidator, fork: Fork,
                         genesis_validators_root: Eth2Digest, epoch: Epoch
                        ): Future[SignatureResult]