diff --git a/beacon_chain/beacon_clock.nim b/beacon_chain/beacon_clock.nim
index c847c89c9d..9570f20c64 100644
--- a/beacon_chain/beacon_clock.nim
+++ b/beacon_chain/beacon_clock.nim
@@ -26,7 +26,7 @@ type
     ## which blocks are valid - in particular, blocks are not valid if they
     ## come from the future as seen from the local clock.
     ##
-    ## https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/fork-choice.md#fork-choice
+    ## https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/phase0/fork-choice.md#fork-choice
     ##
     # TODO consider NTP and network-adjusted timestamps as outlined here:
     #      https://ethresear.ch/t/network-adjusted-timestamps/4187
diff --git a/beacon_chain/consensus_object_pools/README.md b/beacon_chain/consensus_object_pools/README.md
index f4f13ea1b3..9ac6989810 100644
--- a/beacon_chain/consensus_object_pools/README.md
+++ b/beacon_chain/consensus_object_pools/README.md
@@ -6,10 +6,10 @@ Object in those pools have passed the "gossip validation" filter according
 to specs:
 - blocks: https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#beacon_block
 - aggregate attestations: https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#beacon_aggregate_and_proof
-- unaggregated attestation: https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#beacon_attestation_subnet_id
+- unaggregated attestation: https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/phase0/p2p-interface.md#beacon_attestation_subnet_id
 - voluntary exits: https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#voluntary_exit
 - Attester slashings: https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#attester_slashing
-- Proposer slashings: https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#proposer_slashing
+- Proposer slashings: https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/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.
 For blocks, this means verifying state transition and all contained cryptographic signatures (instead of just the proposer signature).
diff --git a/beacon_chain/consensus_object_pools/block_dag.nim b/beacon_chain/consensus_object_pools/block_dag.nim
index 883c8e6de3..b45339da65 100644
--- a/beacon_chain/consensus_object_pools/block_dag.nim
+++ b/beacon_chain/consensus_object_pools/block_dag.nim
@@ -123,7 +123,7 @@ 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/v1.1.10/specs/phase0/fork-choice.md#get_ancestor
+  ## https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/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/consensus_object_pools/blockchain_dag.nim b/beacon_chain/consensus_object_pools/blockchain_dag.nim
index 93cb47c4b6..11561d3a4d 100644
--- a/beacon_chain/consensus_object_pools/blockchain_dag.nim
+++ b/beacon_chain/consensus_object_pools/blockchain_dag.nim
@@ -179,7 +179,7 @@ func init*(
         of BeaconStateFork.Phase0: false
         of BeaconStateFork.Altair: false
         of BeaconStateFork.Bellatrix:
-          # https://github.com/ethereum/consensus-specs/blob/v1.1.7/specs/merge/beacon-chain.md#is_merge_transition_complete
+          # https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/bellatrix/beacon-chain.md#is_merge_transition_complete
           state.bellatrixData.data.latest_execution_payload_header !=
             ExecutionPayloadHeader()
     )
diff --git a/beacon_chain/gossip_processing/README.md b/beacon_chain/gossip_processing/README.md
index 2807e13216..237fc5a632 100644
--- a/beacon_chain/gossip_processing/README.md
+++ b/beacon_chain/gossip_processing/README.md
@@ -12,9 +12,9 @@ Gossip validation is different from consensus verification in particular for blo
 - Blocks: https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#beacon_block
 - Attestations (aggregated): https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#beacon_aggregate_and_proof
 - Attestations (unaggregated): https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/phase0/p2p-interface.md#attestation-subnets
-- Voluntary exits: https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#voluntary_exit
+- Voluntary exits: https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/phase0/p2p-interface.md#voluntary_exit
 - Proposer slashings: https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#proposer_slashing
-- Attester slashing: https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#attester_slashing
+- Attester slashing: https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/phase0/p2p-interface.md#attester_slashing
 
 There are multiple consumers of validated consensus objects:
 - a `ValidationResult.Accept` output triggers rebroadcasting in libp2p
diff --git a/beacon_chain/gossip_processing/gossip_validation.nim b/beacon_chain/gossip_processing/gossip_validation.nim
index d49a32743e..b16585d28e 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(
   let
     pastSlot = (wallTime - MAXIMUM_GOSSIP_CLOCK_DISPARITY).toSlot()
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#configuration
+  # https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/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.
@@ -764,7 +764,7 @@ proc validateAggregate*(
 
   return ok((attesting_indices, sig))
 
-# https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#attester_slashing
+# https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/phase0/p2p-interface.md#attester_slashing
 proc validateAttesterSlashing*(
     pool: ExitPool, attester_slashing: AttesterSlashing):
     Result[void, ValidationError] =
@@ -787,7 +787,7 @@ proc validateAttesterSlashing*(
 
   ok()
 
-# https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#proposer_slashing
+# https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/phase0/p2p-interface.md#proposer_slashing
 proc validateProposerSlashing*(
     pool: ExitPool, proposer_slashing: ProposerSlashing):
     Result[void, ValidationError] =
diff --git a/beacon_chain/networking/eth2_network.nim b/beacon_chain/networking/eth2_network.nim
index c0eb9452b2..eea39421b4 100644
--- a/beacon_chain/networking/eth2_network.nim
+++ b/beacon_chain/networking/eth2_network.nim
@@ -2476,7 +2476,7 @@ proc subscribeAttestationSubnets*(
 
 proc unsubscribeAttestationSubnets*(
     node: Eth2Node, subnets: AttnetBits, forkDigest: ForkDigest) =
-  # https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#attestations-and-aggregation
+  # https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/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/spec/beacon_time.nim b/beacon_chain/spec/beacon_time.nim
index fdf0b5caf6..7e6cbb6a68 100644
--- a/beacon_chain/spec/beacon_time.nim
+++ b/beacon_chain/spec/beacon_time.nim
@@ -47,7 +47,7 @@ const
   GENESIS_SLOT* = Slot(0)
   GENESIS_EPOCH* = Epoch(0) # compute_epoch_at_slot(GENESIS_SLOT)
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/fork-choice.md#constant
+  # https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/phase0/fork-choice.md#constant
   INTERVALS_PER_SLOT* = 3
 
   FAR_FUTURE_BEACON_TIME* = BeaconTime(ns_since_genesis: int64.high())
diff --git a/beacon_chain/spec/beaconstate.nim b/beacon_chain/spec/beaconstate.nim
index f94e4706cc..fc32e48471 100644
--- a/beacon_chain/spec/beaconstate.nim
+++ b/beacon_chain/spec/beaconstate.nim
@@ -150,8 +150,8 @@ func get_whistleblower_reward*(validator_effective_balance: Gwei): Gwei =
   validator_effective_balance div WHISTLEBLOWER_REWARD_QUOTIENT
 
 # https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/phase0/beacon-chain.md#slash_validator
-# https://github.com/ethereum/consensus-specs/blob/v1.1.6/specs/altair/beacon-chain.md#modified-slash_validator
-# https://github.com/ethereum/consensus-specs/blob/v1.1.6/specs/merge/beacon-chain.md#modified-slash_validator
+# https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/altair/beacon-chain.md#modified-slash_validator
+# https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/bellatrix/beacon-chain.md#modified-slash_validator
 func get_proposer_reward(state: ForkyBeaconState, whistleblower_reward: Gwei): Gwei =
   when state is phase0.BeaconState:
     whistleblower_reward div PROPOSER_REWARD_QUOTIENT
@@ -161,8 +161,8 @@ func get_proposer_reward(state: ForkyBeaconState, whistleblower_reward: Gwei): G
     {.fatal: "invalid BeaconState type".}
 
 # https://github.com/ethereum/consensus-specs/blob/v1.1.6/specs/phase0/beacon-chain.md#slash_validator
-# https://github.com/ethereum/consensus-specs/blob/v1.1.6/specs/altair/beacon-chain.md#modified-slash_validator
-# https://github.com/ethereum/consensus-specs/blob/v1.1.6/specs/merge/beacon-chain.md#modified-slash_validator
+# https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/altair/beacon-chain.md#modified-slash_validator
+# https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/bellatrix/beacon-chain.md#modified-slash_validator
 proc slash_validator*(
     cfg: RuntimeConfig, state: var ForkyBeaconState,
     slashed_index: ValidatorIndex, cache: var StateCache):
diff --git a/beacon_chain/spec/datatypes/base.nim b/beacon_chain/spec/datatypes/base.nim
index 1ddf83b93a..435a57a703 100644
--- a/beacon_chain/spec/datatypes/base.nim
+++ b/beacon_chain/spec/datatypes/base.nim
@@ -82,7 +82,7 @@ const
   ZERO_HASH* = Eth2Digest()
   MAX_GRAFFITI_SIZE* = 32
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/phase0/p2p-interface.md#configuration
+  # https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/phase0/p2p-interface.md#configuration
   MAXIMUM_GOSSIP_CLOCK_DISPARITY* = 500.millis
 
   SLOTS_PER_ETH1_VOTING_PERIOD* =
diff --git a/beacon_chain/spec/network.nim b/beacon_chain/spec/network.nim
index e3d070bf5d..52328e660a 100644
--- a/beacon_chain/spec/network.nim
+++ b/beacon_chain/spec/network.nim
@@ -137,7 +137,7 @@ func getDiscoveryForkID*(cfg: RuntimeConfig,
       next_fork_version: current_fork_version,
       next_fork_epoch: FAR_FUTURE_EPOCH)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.1.10/specs/altair/p2p-interface.md#transitioning-the-gossip
+# https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/specs/altair/p2p-interface.md#transitioning-the-gossip
 type GossipState* = set[BeaconStateFork]
 func getTargetGossipState*(
     epoch, ALTAIR_FORK_EPOCH, BELLATRIX_FORK_EPOCH: Epoch, isBehind: bool):
diff --git a/beacon_chain/spec/state_transition.nim b/beacon_chain/spec/state_transition.nim
index 025c440c60..5b29d8d993 100644
--- a/beacon_chain/spec/state_transition.nim
+++ b/beacon_chain/spec/state_transition.nim
@@ -122,7 +122,7 @@ 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/v1.0.1/specs/phase0/beacon-chain.md#beacon-chain-state-transition-function
+# https://github.com/ethereum/consensus-specs/blob/v1.2.0-rc.1/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/tests/consensus_spec/fixtures_utils.nim b/tests/consensus_spec/fixtures_utils.nim
index 6e8eb715db..54f270ac97 100644
--- a/tests/consensus_spec/fixtures_utils.nim
+++ b/tests/consensus_spec/fixtures_utils.nim
@@ -35,7 +35,7 @@ type
   UnconsumedInput* = object of CatchableError
   TestSizeError* = object of ValueError
 
-  # https://github.com/ethereum/consensus-specs/tree/v1.1.6/tests/formats/rewards#rewards-tests
+  # https://github.com/ethereum/consensus-specs/tree/v1.2.0-rc.1/tests/formats/rewards#rewards-tests
   Deltas* = object
     rewards*: List[uint64, Limit VALIDATOR_REGISTRY_LIMIT]
     penalties*: List[uint64, Limit VALIDATOR_REGISTRY_LIMIT]