diff --git a/beacon_chain/el/merkle_minimal.nim b/beacon_chain/el/merkle_minimal.nim
index 3ccb3927e2..e7c90d3345 100644
--- a/beacon_chain/el/merkle_minimal.nim
+++ b/beacon_chain/el/merkle_minimal.nim
@@ -7,7 +7,7 @@
 
 {.push raises: [].}
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/tests/core/pyspec/eth2spec/utils/merkle_minimal.py
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/tests/core/pyspec/eth2spec/utils/merkle_minimal.py
 
 # Merkle tree helpers
 # ---------------------------------------------------------------
diff --git a/beacon_chain/libnimbus_lc/libnimbus_lc.h b/beacon_chain/libnimbus_lc/libnimbus_lc.h
index 86f501a69c..7037cd9e41 100644
--- a/beacon_chain/libnimbus_lc/libnimbus_lc.h
+++ b/beacon_chain/libnimbus_lc/libnimbus_lc.h
@@ -94,7 +94,7 @@ typedef struct ETHConsensusConfig ETHConsensusConfig;
  *         based on the given `config.yaml` file content - If successful.
  * @return `NULL` - If the given `config.yaml` is malformed or incompatible.
  *
- * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/configs/README.md
+ * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/configs/README.md
  */
 ETH_RESULT_USE_CHECK
 ETHConsensusConfig *_Nullable ETHConsensusConfigCreateFromYaml(const char *configFileContent);
@@ -150,7 +150,7 @@ typedef struct ETHBeaconState ETHBeaconState;
  * @return `NULL` - If the given `sszBytes` is malformed.
  *
  * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#beaconstate
- * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#beaconstate
+ * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#beaconstate
  * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/bellatrix/beacon-chain.md#beaconstate
  * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.2/specs/capella/beacon-chain.md#beaconstate
  * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.9/configs/README.md
diff --git a/beacon_chain/libnimbus_lc/libnimbus_lc.nim b/beacon_chain/libnimbus_lc/libnimbus_lc.nim
index d50f7178c1..638d9c07da 100644
--- a/beacon_chain/libnimbus_lc/libnimbus_lc.nim
+++ b/beacon_chain/libnimbus_lc/libnimbus_lc.nim
@@ -142,10 +142,10 @@ proc ETHBeaconStateCreateFromSsz(
   ##
   ## See:
   ## * https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/beacon-chain.md#beaconstate
-  ## * https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#beaconstate
+  ## * https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#beaconstate
   ## * https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/bellatrix/beacon-chain.md#beaconstate
   ## * https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.3/specs/capella/beacon-chain.md#beaconstate
-  ## * https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/configs/README.md
+  ## * https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/configs/README.md
   let
     consensusFork = ConsensusFork.decodeString($consensusVersion).valueOr:
       return nil
diff --git a/beacon_chain/nimbus_beacon_node.nim b/beacon_chain/nimbus_beacon_node.nim
index 81b2fa95aa..ab72a27998 100644
--- a/beacon_chain/nimbus_beacon_node.nim
+++ b/beacon_chain/nimbus_beacon_node.nim
@@ -2086,7 +2086,7 @@ proc installMessageValidators(node: BeaconNode) =
                 MsgSource.gossip, msg)))
 
       when consensusFork >= ConsensusFork.Capella:
-        # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/capella/p2p-interface.md#bls_to_execution_change
+        # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/capella/p2p-interface.md#bls_to_execution_change
         node.network.addAsyncValidator(
           getBlsToExecutionChangeTopic(digest), proc (
             msg: SignedBLSToExecutionChange
diff --git a/beacon_chain/rpc/rest_config_api.nim b/beacon_chain/rpc/rest_config_api.nim
index 2a3a3b118b..2d1cb5d8a0 100644
--- a/beacon_chain/rpc/rest_config_api.nim
+++ b/beacon_chain/rpc/rest_config_api.nim
@@ -24,7 +24,7 @@ proc installConfigApiHandlers*(router: var RestRouter, node: BeaconNode) =
     cachedConfigSpec =
       RestApiResponse.prepareJsonResponse(
         (
-          # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/presets/mainnet/phase0.yaml
+          # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/presets/mainnet/phase0.yaml
           MAX_COMMITTEES_PER_SLOT:
             Base10.toString(MAX_COMMITTEES_PER_SLOT),
           TARGET_COMMITTEE_SIZE:
@@ -95,7 +95,7 @@ proc installConfigApiHandlers*(router: var RestRouter, node: BeaconNode) =
           MAX_VOLUNTARY_EXITS:
             Base10.toString(MAX_VOLUNTARY_EXITS),
 
-          # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/presets/mainnet/altair.yaml
+          # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/presets/mainnet/altair.yaml
           INACTIVITY_PENALTY_QUOTIENT_ALTAIR:
             Base10.toString(INACTIVITY_PENALTY_QUOTIENT_ALTAIR),
           MIN_SLASHING_PENALTY_QUOTIENT_ALTAIR:
@@ -113,7 +113,7 @@ proc installConfigApiHandlers*(router: var RestRouter, node: BeaconNode) =
           UPDATE_TIMEOUT:
             Base10.toString(UPDATE_TIMEOUT),
 
-          # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/presets/mainnet/bellatrix.yaml
+          # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/presets/mainnet/bellatrix.yaml
           INACTIVITY_PENALTY_QUOTIENT_BELLATRIX:
             Base10.toString(INACTIVITY_PENALTY_QUOTIENT_BELLATRIX),
           MIN_SLASHING_PENALTY_QUOTIENT_BELLATRIX:
@@ -130,7 +130,7 @@ proc installConfigApiHandlers*(router: var RestRouter, node: BeaconNode) =
           MAX_EXTRA_DATA_BYTES:
             Base10.toString(uint64(MAX_EXTRA_DATA_BYTES)),
 
-          # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/presets/mainnet/capella.yaml
+          # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/presets/mainnet/capella.yaml
           MAX_BLS_TO_EXECUTION_CHANGES:
             Base10.toString(uint64(MAX_BLS_TO_EXECUTION_CHANGES)),
           MAX_WITHDRAWALS_PER_PAYLOAD:
@@ -138,7 +138,7 @@ proc installConfigApiHandlers*(router: var RestRouter, node: BeaconNode) =
           MAX_VALIDATORS_PER_WITHDRAWALS_SWEEP:
             Base10.toString(uint64(MAX_VALIDATORS_PER_WITHDRAWALS_SWEEP)),
 
-          # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/presets/mainnet/deneb.yaml
+          # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/presets/mainnet/deneb.yaml
           FIELD_ELEMENTS_PER_BLOB:
             Base10.toString(deneb_preset.FIELD_ELEMENTS_PER_BLOB),
           MAX_BLOB_COMMITMENTS_PER_BLOCK:
diff --git a/beacon_chain/spec/beaconstate.nim b/beacon_chain/spec/beaconstate.nim
index 97115306e5..2aa73e8ff9 100644
--- a/beacon_chain/spec/beaconstate.nim
+++ b/beacon_chain/spec/beaconstate.nim
@@ -370,8 +370,8 @@ func get_slashing_penalty*(
   else:
     {.fatal: "invalid BeaconState type".}
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/phase0/beacon-chain.md#slash_validator
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#modified-slash_validator
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/phase0/beacon-chain.md#slash_validator
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#modified-slash_validator
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/bellatrix/beacon-chain.md#modified-slash_validator
 func get_whistleblower_reward*(
     state: phase0.BeaconState | altair.BeaconState | bellatrix.BeaconState |
@@ -385,8 +385,8 @@ func get_whistleblower_reward*(
     validator_effective_balance: Gwei): Gwei =
   validator_effective_balance div WHISTLEBLOWER_REWARD_QUOTIENT_ELECTRA
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/phase0/beacon-chain.md#slash_validator
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#modified-slash_validator
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/phase0/beacon-chain.md#slash_validator
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#modified-slash_validator
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/bellatrix/beacon-chain.md#modified-slash_validator
 func get_proposer_reward(state: ForkyBeaconState, whistleblower_reward: Gwei): Gwei =
   when state is phase0.BeaconState:
@@ -398,8 +398,8 @@ func get_proposer_reward(state: ForkyBeaconState, whistleblower_reward: Gwei): G
   else:
     {.fatal: "invalid BeaconState type".}
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/phase0/beacon-chain.md#slash_validator
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#modified-slash_validator
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/phase0/beacon-chain.md#slash_validator
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#modified-slash_validator
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/bellatrix/beacon-chain.md#modified-slash_validator
 proc slash_validator*(
     cfg: RuntimeConfig, state: var ForkyBeaconState,
@@ -908,7 +908,7 @@ func get_attestation_participation_flag_indices(
 # TODO these duplicate some stuff in state_transition_epoch which uses TotalBalances
 # better to centralize around that if feasible
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/phase0/beacon-chain.md#get_total_active_balance
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/phase0/beacon-chain.md#get_total_active_balance
 func get_total_active_balance*(state: ForkyBeaconState, cache: var StateCache): Gwei =
   ## Return the combined effective balance of the active validators.
   ## Note: ``get_total_balance`` returns ``EFFECTIVE_BALANCE_INCREMENT`` Gwei
@@ -935,7 +935,7 @@ func get_base_reward_per_increment*(
   get_base_reward_per_increment_sqrt(
     integer_squareroot(distinctBase(total_active_balance)))
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#get_base_reward
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#get_base_reward
 func get_base_reward(
     state: altair.BeaconState | bellatrix.BeaconState | capella.BeaconState |
            deneb.BeaconState | electra.BeaconState | fulu.BeaconState,
diff --git a/beacon_chain/spec/datatypes/altair.nim b/beacon_chain/spec/datatypes/altair.nim
index ad1e720df9..d603d42a81 100644
--- a/beacon_chain/spec/datatypes/altair.nim
+++ b/beacon_chain/spec/datatypes/altair.nim
@@ -40,7 +40,7 @@ static:
   doAssert ord(TIMELY_HEAD_FLAG_INDEX) == 2
 
 const
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#incentivization-weights
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#incentivization-weights
   TIMELY_SOURCE_WEIGHT* = 14
   TIMELY_TARGET_WEIGHT* = 26
   TIMELY_HEAD_WEIGHT* = 14
@@ -96,7 +96,7 @@ type
     sync_committee_bits*: BitArray[SYNC_COMMITTEE_SIZE]
     sync_committee_signature*: TrustedSig
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#synccommittee
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#synccommittee
   SyncCommittee* = object
     pubkeys*: HashArray[Limit SYNC_COMMITTEE_SIZE, ValidatorPubKey]
     aggregate_pubkey*: ValidatorPubKey
diff --git a/beacon_chain/spec/datatypes/base.nim b/beacon_chain/spec/datatypes/base.nim
index 05a113173c..d0aca0c117 100644
--- a/beacon_chain/spec/datatypes/base.nim
+++ b/beacon_chain/spec/datatypes/base.nim
@@ -401,7 +401,7 @@ type
     sync_committees*: Table[SyncCommitteePeriod, SyncCommitteeCache]
 
   # This matches the mutable state of the Solidity deposit contract
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/solidity_deposit_contract/deposit_contract.sol
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/solidity_deposit_contract/deposit_contract.sol
   DepositContractState* = object
     branch*: array[DEPOSIT_CONTRACT_TREE_DEPTH, Eth2Digest]
     deposit_count*: array[32, byte] # Uint256
diff --git a/beacon_chain/spec/datatypes/capella.nim b/beacon_chain/spec/datatypes/capella.nim
index ea0b06ee44..4f3f529a70 100644
--- a/beacon_chain/spec/datatypes/capella.nim
+++ b/beacon_chain/spec/datatypes/capella.nim
@@ -676,13 +676,13 @@ func is_valid_light_client_header*(
     get_subtree_index(EXECUTION_PAYLOAD_GINDEX),
     header.beacon.body_root)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/capella/light-client/fork.md#upgrading-light-client-data
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/capella/light-client/fork.md#upgrading-light-client-data
 func upgrade_lc_header_to_capella*(
     pre: altair.LightClientHeader): LightClientHeader =
   LightClientHeader(
     beacon: pre.beacon)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/capella/light-client/fork.md#upgrading-light-client-data
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/capella/light-client/fork.md#upgrading-light-client-data
 func upgrade_lc_bootstrap_to_capella*(
     pre: altair.LightClientBootstrap): LightClientBootstrap =
   LightClientBootstrap(
@@ -690,7 +690,7 @@ func upgrade_lc_bootstrap_to_capella*(
     current_sync_committee: pre.current_sync_committee,
     current_sync_committee_branch: pre.current_sync_committee_branch)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/capella/light-client/fork.md#upgrading-light-client-data
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/capella/light-client/fork.md#upgrading-light-client-data
 func upgrade_lc_update_to_capella*(
     pre: altair.LightClientUpdate): LightClientUpdate =
   LightClientUpdate(
@@ -702,7 +702,7 @@ func upgrade_lc_update_to_capella*(
     sync_aggregate: pre.sync_aggregate,
     signature_slot: pre.signature_slot)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/capella/light-client/fork.md#upgrading-light-client-data
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/capella/light-client/fork.md#upgrading-light-client-data
 func upgrade_lc_finality_update_to_capella*(
     pre: altair.LightClientFinalityUpdate): LightClientFinalityUpdate =
   LightClientFinalityUpdate(
@@ -712,7 +712,7 @@ func upgrade_lc_finality_update_to_capella*(
     sync_aggregate: pre.sync_aggregate,
     signature_slot: pre.signature_slot)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/capella/light-client/fork.md#upgrading-light-client-data
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/capella/light-client/fork.md#upgrading-light-client-data
 func upgrade_lc_optimistic_update_to_capella*(
     pre: altair.LightClientOptimisticUpdate): LightClientOptimisticUpdate =
   LightClientOptimisticUpdate(
diff --git a/beacon_chain/spec/datatypes/deneb.nim b/beacon_chain/spec/datatypes/deneb.nim
index bb45660664..3298c5d719 100644
--- a/beacon_chain/spec/datatypes/deneb.nim
+++ b/beacon_chain/spec/datatypes/deneb.nim
@@ -725,7 +725,7 @@ func upgrade_lc_update_to_deneb*(
     sync_aggregate: pre.sync_aggregate,
     signature_slot: pre.signature_slot)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/deneb/light-client/fork.md#upgrading-light-client-data
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/deneb/light-client/fork.md#upgrading-light-client-data
 func upgrade_lc_finality_update_to_deneb*(
     pre: capella.LightClientFinalityUpdate): LightClientFinalityUpdate =
   LightClientFinalityUpdate(
diff --git a/beacon_chain/spec/datatypes/phase0.nim b/beacon_chain/spec/datatypes/phase0.nim
index ec4b70351f..93155a0701 100644
--- a/beacon_chain/spec/datatypes/phase0.nim
+++ b/beacon_chain/spec/datatypes/phase0.nim
@@ -221,7 +221,7 @@ type
     deposits*: List[Deposit, Limit MAX_DEPOSITS]
     voluntary_exits*: List[TrustedSignedVoluntaryExit, Limit MAX_VOLUNTARY_EXITS]
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/phase0/beacon-chain.md#signedbeaconblock
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/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 040c0ddd0d..ff38d857c4 100644
--- a/beacon_chain/spec/forks.nim
+++ b/beacon_chain/spec/forks.nim
@@ -1679,7 +1679,7 @@ func compute_fork_data_root*(current_version: Version,
     genesis_validators_root: genesis_validators_root
   ))
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/phase0/beacon-chain.md#compute_fork_digest
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/phase0/beacon-chain.md#compute_fork_digest
 func compute_fork_digest*(current_version: Version,
                           genesis_validators_root: Eth2Digest): ForkDigest =
   ## Return the 4-byte fork digest for the ``current_version`` and
diff --git a/beacon_chain/spec/helpers.nim b/beacon_chain/spec/helpers.nim
index feb7417bee..c67a87294a 100644
--- a/beacon_chain/spec/helpers.nim
+++ b/beacon_chain/spec/helpers.nim
@@ -203,7 +203,7 @@ 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/v1.5.0-beta.3/specs/altair/beacon-chain.md#add_flag
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/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
@@ -279,7 +279,7 @@ func get_safety_threshold*(store: ForkyLightClientStore): uint64 =
     store.current_max_active_participants
   ) div 2
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/light-client/sync-protocol.md#is_better_update
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/light-client/sync-protocol.md#is_better_update
 type LightClientUpdateMetadata* = object
   attested_slot*, finalized_slot*, signature_slot*: Slot
   has_sync_committee*, has_finality*: bool
diff --git a/beacon_chain/spec/presets/mainnet/altair_preset.nim b/beacon_chain/spec/presets/mainnet/altair_preset.nim
index 5462ed1753..48181107d1 100644
--- a/beacon_chain/spec/presets/mainnet/altair_preset.nim
+++ b/beacon_chain/spec/presets/mainnet/altair_preset.nim
@@ -8,7 +8,7 @@
 {.push raises: [].}
 
 # Mainnet preset - Altair
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/presets/mainnet/altair.yaml
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/presets/mainnet/altair.yaml
 const
   # Updated penalty values
   # ---------------------------------------------------------------
diff --git a/beacon_chain/spec/presets/mainnet/bellatrix_preset.nim b/beacon_chain/spec/presets/mainnet/bellatrix_preset.nim
index a8692d69ee..84fe5dfba5 100644
--- a/beacon_chain/spec/presets/mainnet/bellatrix_preset.nim
+++ b/beacon_chain/spec/presets/mainnet/bellatrix_preset.nim
@@ -8,7 +8,7 @@
 {.push raises: [].}
 
 # Mainnet preset - Bellatrix
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/presets/mainnet/bellatrix.yaml
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/presets/mainnet/bellatrix.yaml
 const
   # Updated penalty values
   # ---------------------------------------------------------------
diff --git a/beacon_chain/spec/presets/mainnet/capella_preset.nim b/beacon_chain/spec/presets/mainnet/capella_preset.nim
index f35fb62ea1..e3607828fb 100644
--- a/beacon_chain/spec/presets/mainnet/capella_preset.nim
+++ b/beacon_chain/spec/presets/mainnet/capella_preset.nim
@@ -8,7 +8,7 @@
 {.push raises: [].}
 
 # Mainnet preset - Capella
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/presets/mainnet/capella.yaml
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/presets/mainnet/capella.yaml
 const
   # Max operations per block
   # ---------------------------------------------------------------
diff --git a/beacon_chain/spec/presets/mainnet/deneb_preset.nim b/beacon_chain/spec/presets/mainnet/deneb_preset.nim
index 2624788284..d217825f3c 100644
--- a/beacon_chain/spec/presets/mainnet/deneb_preset.nim
+++ b/beacon_chain/spec/presets/mainnet/deneb_preset.nim
@@ -8,7 +8,7 @@
 {.push raises: [].}
 
 # Mainnet preset - Deneb
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/presets/mainnet/deneb.yaml
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/presets/mainnet/deneb.yaml
 const
   # `uint64(4096)`
   FIELD_ELEMENTS_PER_BLOB*: uint64 = 4096
diff --git a/beacon_chain/spec/presets/minimal/altair_preset.nim b/beacon_chain/spec/presets/minimal/altair_preset.nim
index 2f56b84cff..d31ec3bf82 100644
--- a/beacon_chain/spec/presets/minimal/altair_preset.nim
+++ b/beacon_chain/spec/presets/minimal/altair_preset.nim
@@ -8,7 +8,7 @@
 {.push raises: [].}
 
 # Minimal preset - Altair
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/presets/minimal/altair.yaml
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/presets/minimal/altair.yaml
 const
   # Updated penalty values
   # ---------------------------------------------------------------
diff --git a/beacon_chain/spec/presets/minimal/bellatrix_preset.nim b/beacon_chain/spec/presets/minimal/bellatrix_preset.nim
index 9a81004c53..46484c0ef2 100644
--- a/beacon_chain/spec/presets/minimal/bellatrix_preset.nim
+++ b/beacon_chain/spec/presets/minimal/bellatrix_preset.nim
@@ -8,7 +8,7 @@
 {.push raises: [].}
 
 # Minimal preset - Bellatrix
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/presets/minimal/bellatrix.yaml
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/presets/minimal/bellatrix.yaml
 const
   # Updated penalty values
   # ---------------------------------------------------------------
diff --git a/beacon_chain/spec/presets/minimal/capella_preset.nim b/beacon_chain/spec/presets/minimal/capella_preset.nim
index d5c911ef65..69fecf2eec 100644
--- a/beacon_chain/spec/presets/minimal/capella_preset.nim
+++ b/beacon_chain/spec/presets/minimal/capella_preset.nim
@@ -8,7 +8,7 @@
 {.push raises: [].}
 
 # Minimal preset - Capella
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/presets/minimal/capella.yaml
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/presets/minimal/capella.yaml
 const
   # Max operations per block
   # ---------------------------------------------------------------
diff --git a/beacon_chain/spec/presets/minimal/deneb_preset.nim b/beacon_chain/spec/presets/minimal/deneb_preset.nim
index 0818ee6077..b769aa0751 100644
--- a/beacon_chain/spec/presets/minimal/deneb_preset.nim
+++ b/beacon_chain/spec/presets/minimal/deneb_preset.nim
@@ -8,7 +8,7 @@
 {.push raises: [].}
 
 # Minimal preset - Deneb
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/presets/minimal/deneb.yaml
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/presets/minimal/deneb.yaml
 const
   # `uint64(4096)`
   FIELD_ELEMENTS_PER_BLOB*: uint64 = 4096
diff --git a/beacon_chain/spec/state_transition_block.nim b/beacon_chain/spec/state_transition_block.nim
index 378656872f..0f2ad1b2f2 100644
--- a/beacon_chain/spec/state_transition_block.nim
+++ b/beacon_chain/spec/state_transition_block.nim
@@ -803,7 +803,7 @@ func get_participant_reward*(total_active_balance: Gwei): Gwei =
 func get_proposer_reward*(participant_reward: Gwei): Gwei =
   participant_reward * PROPOSER_WEIGHT div (WEIGHT_DENOMINATOR - PROPOSER_WEIGHT)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#sync-aggregate-processing
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#sync-aggregate-processing
 proc process_sync_aggregate*(
     state: var (altair.BeaconState | bellatrix.BeaconState |
                 capella.BeaconState | deneb.BeaconState | electra.BeaconState |
@@ -1216,7 +1216,7 @@ proc process_block*(
 
   ok(? process_operations(cfg, state, blck.body, 0.Gwei, flags, cache))
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#block-processing
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#block-processing
 # TODO workaround for https://github.com/nim-lang/Nim/issues/18095
 # copy of datatypes/altair.nim
 type SomeAltairBlock =
diff --git a/beacon_chain/spec/state_transition_epoch.nim b/beacon_chain/spec/state_transition_epoch.nim
index b85af84ece..d63fe98672 100644
--- a/beacon_chain/spec/state_transition_epoch.nim
+++ b/beacon_chain/spec/state_transition_epoch.nim
@@ -155,7 +155,7 @@ func process_attestations*(
     if v.flags.contains RewardFlags.isPreviousEpochHeadAttester:
       info.balances.previous_epoch_head_attesters_raw += validator_balance
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/phase0/beacon-chain.md#helpers
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/phase0/beacon-chain.md#helpers
 # get_eligible_validator_indices
 func is_eligible_validator*(validator: RewardStatus): bool =
   validator.flags.contains(RewardFlags.isActiveInPreviousEpoch) or
@@ -174,7 +174,7 @@ func is_eligible_validator*(validator: ParticipationInfo): bool =
 
 from ./datatypes/deneb import BeaconState
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#get_unslashed_participating_indices
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#get_unslashed_participating_indices
 func get_unslashed_participating_balances*(
     state: altair.BeaconState | bellatrix.BeaconState | capella.BeaconState |
            deneb.BeaconState | electra.BeaconState | fulu.BeaconState):
@@ -462,7 +462,7 @@ proc compute_unrealized_finality*(
     justified: jfRes.current_justified_checkpoint,
     finalized: jfRes.finalized_checkpoint)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/phase0/beacon-chain.md#helpers
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/phase0/beacon-chain.md#helpers
 func get_base_reward_sqrt*(state: phase0.BeaconState, index: ValidatorIndex,
     total_balance_sqrt: auto): Gwei =
   # Spec function recalculates total_balance every time, which creates an
@@ -594,7 +594,7 @@ func get_inactivity_penalty_delta*(
 
   delta
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/phase0/beacon-chain.md#get_attestation_deltas
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/phase0/beacon-chain.md#get_attestation_deltas
 func get_attestation_deltas(
     state: phase0.BeaconState, info: var phase0.EpochInfo) =
   ## Update rewards with attestation reward/penalty deltas for each validator.
@@ -650,7 +650,7 @@ func get_base_reward_increment*(
     EFFECTIVE_BALANCE_INCREMENT.Gwei
   increments * base_reward_per_increment
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#get_flag_index_deltas
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#get_flag_index_deltas
 func get_flag_index_reward*(
     state: altair.BeaconState | bellatrix.BeaconState | capella.BeaconState |
            deneb.BeaconState | electra.BeaconState | fulu.BeaconState,
@@ -976,7 +976,7 @@ func process_registry_updates*(
   ok()
 
 # 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-beta.3/specs/altair/beacon-chain.md#slashings
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#slashings
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/bellatrix/beacon-chain.md#slashings
 func get_adjusted_total_slashing_balance*(
     state: ForkyBeaconState, total_balance: Gwei): Gwei =
@@ -1133,14 +1133,14 @@ func process_historical_roots_update*(state: var ForkyBeaconState) =
     if not state.historical_roots.add state.compute_historical_root():
       raiseAssert "no more room for historical roots, so long and thanks for the fish!"
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/phase0/beacon-chain.md#participation-records-rotation
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/phase0/beacon-chain.md#participation-records-rotation
 func process_participation_record_updates*(state: var phase0.BeaconState) =
   # Rotate current/previous epoch attestations - using swap avoids copying all
   # elements using a slow genericSeqAssign
   state.previous_epoch_attestations.clear()
   swap(state.previous_epoch_attestations, state.current_epoch_attestations)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#participation-flags-updates
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#participation-flags-updates
 func process_participation_flag_updates*(
     state: var (altair.BeaconState | bellatrix.BeaconState |
                 capella.BeaconState | deneb.BeaconState |
@@ -1190,7 +1190,7 @@ template compute_inactivity_update(
       min(cfg.INACTIVITY_SCORE_RECOVERY_RATE, inactivity_score)
   inactivity_score
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#inactivity-scores
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#inactivity-scores
 func process_inactivity_updates*(
     cfg: RuntimeConfig,
     state: var (altair.BeaconState | bellatrix.BeaconState |
@@ -1502,7 +1502,7 @@ proc process_epoch*(
   let epoch = get_current_epoch(state)
   info.init(state)
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#justification-and-finalization
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#justification-and-finalization
   process_justification_and_finalization(state, info.balances, flags)
 
   # state.slot hasn't been incremented yet.
@@ -1545,7 +1545,7 @@ proc process_epoch*(
   let epoch = get_current_epoch(state)
   info.init(state)
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/specs/altair/beacon-chain.md#justification-and-finalization
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/specs/altair/beacon-chain.md#justification-and-finalization
   process_justification_and_finalization(state, info.balances, flags)
 
   # state.slot hasn't been incremented yet.
diff --git a/tests/consensus_spec/altair/test_fixture_light_client_sync_protocol.nim b/tests/consensus_spec/altair/test_fixture_light_client_sync_protocol.nim
index 6e3c773f87..a37968c1dc 100644
--- a/tests/consensus_spec/altair/test_fixture_light_client_sync_protocol.nim
+++ b/tests/consensus_spec/altair/test_fixture_light_client_sync_protocol.nim
@@ -23,7 +23,7 @@ import
   # Test utilities
   ../../testutil, ../../testblockutil
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/tests/core/pyspec/eth2spec/test/helpers/sync_committee.py#L27-L44
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/tests/core/pyspec/eth2spec/test/helpers/sync_committee.py#L27-L44
 proc compute_aggregate_sync_committee_signature(
     cfg: RuntimeConfig,
     forked: ForkedHashedBeaconState,
diff --git a/tests/consensus_spec/test_fixture_kzg.nim b/tests/consensus_spec/test_fixture_kzg.nim
index 3f58df86f4..ea6bf94008 100644
--- a/tests/consensus_spec/test_fixture_kzg.nim
+++ b/tests/consensus_spec/test_fixture_kzg.nim
@@ -76,7 +76,7 @@ proc runVerifyKzgProofTest(suiteName, suitePath, path: string) =
       y = fromHex[32](data["input"]["y"].getStr)
       proof = fromHex[48](data["input"]["proof"].getStr)
 
-    # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/tests/formats/kzg_4844/verify_kzg_proof.md#condition
+    # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/tests/formats/kzg_4844/verify_kzg_proof.md#condition
     # "If the commitment or proof is invalid (e.g. not on the curve or not in
     # the G1 subgroup of the BLS curve) or `z` or `y` are not a valid BLS
     # field element, it should error, i.e. the output should be `null`."
@@ -236,7 +236,7 @@ proc runVerifyCellKzgProofBatchTest(suiteName, suitePath, path: string) =
       cells = data["input"]["cells"].mapIt(fromHex[2048](it.getStr))
       proofs = data["input"]["proofs"].mapIt(fromHex[48](it.getStr))
 
-    # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.3/tests/formats/kzg_7594/verify_cell_kzg_proof_batch.md#condition
+    # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.4/tests/formats/kzg_7594/verify_cell_kzg_proof_batch.md#condition
     # If the blob is invalid (e.g. incorrect length or one of the 32-byte
     # blocks does not represent a BLS field element) it should error, i.e. the
     # the output should be `null`.