diff --git a/beacon_chain/networking/eth2_network.nim b/beacon_chain/networking/eth2_network.nim
index 9c0a0723a..0284ec28a 100644
--- a/beacon_chain/networking/eth2_network.nim
+++ b/beacon_chain/networking/eth2_network.nim
@@ -2448,7 +2448,7 @@ proc updateStabilitySubnetMetadata*(node: Eth2Node, attnets: AttnetBits) =
   node.metadata.seq_number += 1
   node.metadata.attnets = attnets
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/phase0/validator.md#phase-0-attestation-subnet-stability
+  # https://github.com/ethereum/consensus-specs/blob/v1.2.0/specs/phase0/validator.md#phase-0-attestation-subnet-stability
   # https://github.com/ethereum/consensus-specs/blob/v1.2.0/specs/phase0/p2p-interface.md#attestation-subnet-bitfield
   let res = node.discovery.updateRecord({
     enrAttestationSubnetsField: SSZ.encode(node.metadata.attnets)
diff --git a/beacon_chain/spec/beaconstate.nim b/beacon_chain/spec/beaconstate.nim
index 015e11eb9..086367076 100644
--- a/beacon_chain/spec/beaconstate.nim
+++ b/beacon_chain/spec/beaconstate.nim
@@ -793,7 +793,7 @@ func get_next_sync_committee*(state: altair.BeaconState | bellatrix.BeaconState)
   res.aggregate_pubkey = finish(attestersAgg).toPubKey()
   res
 
-# https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/altair/fork.md#upgrading-the-state
+# https://github.com/ethereum/consensus-specs/blob/v1.2.0/specs/altair/fork.md#upgrading-the-state
 func translate_participation(
     state: var altair.BeaconState,
     pending_attestations: openArray[phase0.PendingAttestation]) =
@@ -880,7 +880,7 @@ func upgrade_to_altair*(cfg: RuntimeConfig, pre: phase0.BeaconState):
 
   post
 
-# https://github.com/ethereum/consensus-specs/blob/v1.1.7/specs/merge/fork.md#upgrading-the-state
+# https://github.com/ethereum/consensus-specs/blob/v1.2.0/specs/bellatrix/fork.md#upgrading-the-state
 func upgrade_to_bellatrix*(cfg: RuntimeConfig, pre: altair.BeaconState):
     ref bellatrix.BeaconState =
   let epoch = get_current_epoch(pre)
diff --git a/beacon_chain/spec/state_transition_block.nim b/beacon_chain/spec/state_transition_block.nim
index 5d9b3733b..5cbfd1fe2 100644
--- a/beacon_chain/spec/state_transition_block.nim
+++ b/beacon_chain/spec/state_transition_block.nim
@@ -491,7 +491,7 @@ proc process_sync_aggregate*(
 
   ok()
 
-# https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/bellatrix/beacon-chain.md#process_execution_payload
+# https://github.com/ethereum/consensus-specs/blob/v1.2.0/specs/bellatrix/beacon-chain.md#process_execution_payload
 proc process_execution_payload*(
     state: var bellatrix.BeaconState, payload: ExecutionPayload,
     notify_new_payload: ExecutePayload): Result[void, cstring] =
diff --git a/beacon_chain/spec/state_transition_epoch.nim b/beacon_chain/spec/state_transition_epoch.nim
index 74bb00f65..89caa94cc 100644
--- a/beacon_chain/spec/state_transition_epoch.nim
+++ b/beacon_chain/spec/state_transition_epoch.nim
@@ -856,7 +856,7 @@ func process_registry_updates*(
 
 # https://github.com/ethereum/consensus-specs/blob/v1.2.0/specs/phase0/beacon-chain.md#slashings
 # https://github.com/ethereum/consensus-specs/blob/v1.2.0/specs/altair/beacon-chain.md#slashings
-# https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/bellatrix/beacon-chain.md#slashings
+# https://github.com/ethereum/consensus-specs/blob/v1.2.0/specs/bellatrix/beacon-chain.md#slashings
 func get_adjusted_total_slashing_balance*(
     state: ForkyBeaconState, total_balance: Gwei): Gwei =
   const multiplier =
diff --git a/docs/the_nimbus_book/src/external-block-builder.md b/docs/the_nimbus_book/src/external-block-builder.md
index 47ec6867f..c6ce74831 100644
--- a/docs/the_nimbus_book/src/external-block-builder.md
+++ b/docs/the_nimbus_book/src/external-block-builder.md
@@ -28,4 +28,6 @@ There exists a failure mode, intrinsic to the builder API, wherein the consensus
 
 - [MEV relay list](https://github.com/remyroy/ethstaker/blob/main/MEV-relay-list.md)
 
+- [Mainnet Relay Overview](https://beaconcha.in/relays)
+
 - [Goerli Relay Overview](https://goerli.beaconcha.in/relays)