diff --git a/beacon_node/beacon_chain/src/blob_verification.rs b/beacon_node/beacon_chain/src/blob_verification.rs
index d3e0d2a17..f79288203 100644
--- a/beacon_node/beacon_chain/src/blob_verification.rs
+++ b/beacon_node/beacon_chain/src/blob_verification.rs
@@ -4,7 +4,7 @@ use slot_clock::SlotClock;
 use crate::beacon_chain::{BeaconChain, BeaconChainTypes, MAXIMUM_GOSSIP_CLOCK_DISPARITY};
 use crate::BeaconChainError;
 use bls::PublicKey;
-use types::{consts::eip4844::BLS_MODULUS, BeaconStateError, BlobsSidecar, Hash256, Slot};
+use types::{consts::eip4844::BLS_MODULUS, BeaconStateError, BlobsSidecar, Slot};
 
 pub enum BlobError {
     /// The blob sidecar is from a slot that is later than the current slot (with respect to the
diff --git a/beacon_node/execution_layer/src/engine_api/http.rs b/beacon_node/execution_layer/src/engine_api/http.rs
index 2b7728b98..8eef7aece 100644
--- a/beacon_node/execution_layer/src/engine_api/http.rs
+++ b/beacon_node/execution_layer/src/engine_api/http.rs
@@ -916,8 +916,7 @@ mod test {
     use std::str::FromStr;
     use std::sync::Arc;
     use types::{
-        ExecutionPayloadMerge, ForkName, FullPayload, MainnetEthSpec, Transactions, Unsigned,
-        VariableList,
+        ExecutionPayloadMerge, ForkName, MainnetEthSpec, Transactions, Unsigned, VariableList,
     };
 
     struct Tester {
diff --git a/beacon_node/execution_layer/src/engines.rs b/beacon_node/execution_layer/src/engines.rs
index b5792e383..16562267c 100644
--- a/beacon_node/execution_layer/src/engines.rs
+++ b/beacon_node/execution_layer/src/engines.rs
@@ -11,7 +11,7 @@ use std::sync::Arc;
 use task_executor::TaskExecutor;
 use tokio::sync::{watch, Mutex, RwLock};
 use tokio_stream::wrappers::WatchStream;
-use types::{Address, ExecutionBlockHash, Hash256};
+use types::ExecutionBlockHash;
 
 /// The number of payload IDs that will be stored for each `Engine`.
 ///
diff --git a/beacon_node/execution_layer/src/lib.rs b/beacon_node/execution_layer/src/lib.rs
index 996d98385..b6e85f67d 100644
--- a/beacon_node/execution_layer/src/lib.rs
+++ b/beacon_node/execution_layer/src/lib.rs
@@ -4,7 +4,6 @@
 //! This crate only provides useful functionality for "The Merge", it does not provide any of the
 //! deposit-contract functionality that the `beacon_node/eth1` crate already provides.
 
-use crate::json_structures::JsonBlobBundles;
 use crate::payload_cache::PayloadCache;
 use auth::{strip_prefix, Auth, JwtKey};
 use builder_client::BuilderHttpClient;
@@ -36,8 +35,6 @@ use tokio::{
     time::sleep,
 };
 use tokio_stream::wrappers::WatchStream;
-#[cfg(feature = "withdrawals")]
-use types::Withdrawal;
 use types::{AbstractExecPayload, Blob, ExecPayload, KzgCommitment};
 use types::{
     BlindedPayload, BlockType, ChainSpec, Epoch, ExecutionBlockHash, ForkName,
diff --git a/beacon_node/execution_layer/src/test_utils/mock_execution_layer.rs b/beacon_node/execution_layer/src/test_utils/mock_execution_layer.rs
index e6da676a8..ddddc2c9c 100644
--- a/beacon_node/execution_layer/src/test_utils/mock_execution_layer.rs
+++ b/beacon_node/execution_layer/src/test_utils/mock_execution_layer.rs
@@ -1,7 +1,7 @@
 use crate::{
     test_utils::{
-        Block, MockServer, DEFAULT_BUILDER_THRESHOLD_WEI, DEFAULT_JWT_SECRET,
-        DEFAULT_TERMINAL_BLOCK, DEFAULT_TERMINAL_DIFFICULTY,
+        MockServer, DEFAULT_BUILDER_THRESHOLD_WEI, DEFAULT_JWT_SECRET, DEFAULT_TERMINAL_BLOCK,
+        DEFAULT_TERMINAL_DIFFICULTY,
     },
     Config, *,
 };
diff --git a/beacon_node/http_api/src/publish_blocks.rs b/beacon_node/http_api/src/publish_blocks.rs
index 139bb3558..fb296168d 100644
--- a/beacon_node/http_api/src/publish_blocks.rs
+++ b/beacon_node/http_api/src/publish_blocks.rs
@@ -12,7 +12,7 @@ use tokio::sync::mpsc::UnboundedSender;
 use tree_hash::TreeHash;
 use types::{
     AbstractExecPayload, BlindedPayload, BlobsSidecar, EthSpec, ExecPayload, ExecutionBlockHash,
-    FullPayload, Hash256, SignedBeaconBlock, SignedBeaconBlockEip4844,
+    FullPayload, Hash256, SignedBeaconBlock,
 };
 use warp::Rejection;
 
diff --git a/beacon_node/lighthouse_network/src/service/mod.rs b/beacon_node/lighthouse_network/src/service/mod.rs
index e5fbfe0b0..7b4646503 100644
--- a/beacon_node/lighthouse_network/src/service/mod.rs
+++ b/beacon_node/lighthouse_network/src/service/mod.rs
@@ -34,7 +34,6 @@ use libp2p::multiaddr::{Multiaddr, Protocol as MProtocol};
 use libp2p::swarm::{ConnectionLimits, Swarm, SwarmBuilder, SwarmEvent};
 use libp2p::PeerId;
 use slog::{crit, debug, info, o, trace, warn};
-use std::io::Write;
 use std::path::PathBuf;
 use std::pin::Pin;
 use std::{
diff --git a/beacon_node/lighthouse_network/tests/rpc_tests.rs b/beacon_node/lighthouse_network/tests/rpc_tests.rs
index 918345349..ebdbb6742 100644
--- a/beacon_node/lighthouse_network/tests/rpc_tests.rs
+++ b/beacon_node/lighthouse_network/tests/rpc_tests.rs
@@ -9,8 +9,8 @@ use std::time::Duration;
 use tokio::runtime::Runtime;
 use tokio::time::sleep;
 use types::{
-    BeaconBlock, BeaconBlockAltair, BeaconBlockBase, BeaconBlockMerge, Epoch, EthSpec, ForkContext,
-    ForkName, Hash256, MinimalEthSpec, Signature, SignedBeaconBlock, Slot,
+    BeaconBlock, BeaconBlockAltair, BeaconBlockBase, BeaconBlockMerge, EmptyBlock, Epoch, EthSpec,
+    ForkContext, ForkName, Hash256, MinimalEthSpec, Signature, SignedBeaconBlock, Slot,
 };
 
 mod common;
diff --git a/beacon_node/network/src/beacon_processor/worker/gossip_methods.rs b/beacon_node/network/src/beacon_processor/worker/gossip_methods.rs
index 327a3f683..a38f4d843 100644
--- a/beacon_node/network/src/beacon_processor/worker/gossip_methods.rs
+++ b/beacon_node/network/src/beacon_processor/worker/gossip_methods.rs
@@ -3,7 +3,6 @@ use crate::{metrics, service::NetworkMessage, sync::SyncMessage};
 use beacon_chain::store::Error;
 use beacon_chain::{
     attestation_verification::{self, Error as AttnError, VerifiedAttestation},
-    blob_verification::BlobError,
     observed_operations::ObservationOutcome,
     sync_committee_verification::{self, Error as SyncCommitteeError},
     validator_monitor::get_block_delay_ms,
@@ -22,8 +21,8 @@ use std::time::{Duration, SystemTime, UNIX_EPOCH};
 use store::hot_cold_store::HotColdDBError;
 use tokio::sync::mpsc;
 use types::{
-    Attestation, AttesterSlashing, BlobsSidecar, EthSpec, Hash256, IndexedAttestation,
-    ProposerSlashing, SignedAggregateAndProof, SignedBeaconBlock, SignedBlsToExecutionChange,
+    Attestation, AttesterSlashing, EthSpec, Hash256, IndexedAttestation, ProposerSlashing,
+    SignedAggregateAndProof, SignedBeaconBlock, SignedBlsToExecutionChange,
     SignedContributionAndProof, SignedVoluntaryExit, Slot, SubnetId, SyncCommitteeMessage,
     SyncSubnetId,
 };
@@ -701,11 +700,11 @@ impl<T: BeaconChainTypes> Worker<T> {
     #[allow(clippy::too_many_arguments)]
     pub async fn process_gossip_block_and_blobs_sidecar(
         self,
-        message_id: MessageId,
-        peer_id: PeerId,
-        peer_client: Client,
-        block_and_blob: Arc<SignedBeaconBlockAndBlobsSidecar<T::EthSpec>>,
-        seen_timestamp: Duration,
+        _message_id: MessageId,
+        _peer_id: PeerId,
+        _peer_client: Client,
+        _block_and_blob: Arc<SignedBeaconBlockAndBlobsSidecar<T::EthSpec>>,
+        _seen_timestamp: Duration,
     ) {
         //FIXME
         unimplemented!()
diff --git a/common/eth2_network_config/built_in_network_configs/gnosis/config.yaml b/common/eth2_network_config/built_in_network_configs/gnosis/config.yaml
index d55ef3f3b..6aa2c9590 100644
--- a/common/eth2_network_config/built_in_network_configs/gnosis/config.yaml
+++ b/common/eth2_network_config/built_in_network_configs/gnosis/config.yaml
@@ -36,6 +36,12 @@ ALTAIR_FORK_EPOCH: 512
 # Merge
 BELLATRIX_FORK_VERSION: 0x02000064
 BELLATRIX_FORK_EPOCH: 385536
+# Capella
+CAPELLA_FORK_VERSION: 0x03000064
+CAPELLA_FORK_EPOCH: 18446744073709551615
+# Eip4844
+EIP4844_FORK_VERSION: 0x04000064
+EIP4844_FORK_EPOCH: 18446744073709551615
 # Sharding
 SHARDING_FORK_VERSION: 0x03000064
 SHARDING_FORK_EPOCH: 18446744073709551615
diff --git a/common/eth2_network_config/built_in_network_configs/mainnet/config.yaml b/common/eth2_network_config/built_in_network_configs/mainnet/config.yaml
index 6e87a708f..83e6de790 100644
--- a/common/eth2_network_config/built_in_network_configs/mainnet/config.yaml
+++ b/common/eth2_network_config/built_in_network_configs/mainnet/config.yaml
@@ -36,6 +36,12 @@ ALTAIR_FORK_EPOCH: 74240
 # Merge
 BELLATRIX_FORK_VERSION: 0x02000000
 BELLATRIX_FORK_EPOCH: 144896 # Sept 6, 2022, 11:34:47am UTC
+# Capella
+CAPELLA_FORK_VERSION: 0x03000000
+CAPELLA_FORK_EPOCH: 18446744073709551615
+# Eip4844
+EIP4844_FORK_VERSION: 0x04000000
+EIP4844_FORK_EPOCH: 18446744073709551615
 # Sharding
 SHARDING_FORK_VERSION: 0x03000000
 SHARDING_FORK_EPOCH: 18446744073709551615
diff --git a/consensus/state_processing/src/per_block_processing/block_signature_verifier.rs b/consensus/state_processing/src/per_block_processing/block_signature_verifier.rs
index fe654fcaa..50bfbfdc4 100644
--- a/consensus/state_processing/src/per_block_processing/block_signature_verifier.rs
+++ b/consensus/state_processing/src/per_block_processing/block_signature_verifier.rs
@@ -8,7 +8,7 @@ use rayon::prelude::*;
 use std::borrow::Cow;
 use types::{
     AbstractExecPayload, BeaconState, BeaconStateError, ChainSpec, EthSpec, Hash256,
-    IndexedAttestation, SignedBeaconBlock,
+    SignedBeaconBlock,
 };
 
 pub type Result<T> = std::result::Result<T, Error>;
diff --git a/consensus/types/src/chain_spec.rs b/consensus/types/src/chain_spec.rs
index 9a8c4bb6f..d16c9b809 100644
--- a/consensus/types/src/chain_spec.rs
+++ b/consensus/types/src/chain_spec.rs
@@ -633,7 +633,7 @@ impl ChainSpec {
              * Capella hard fork params
              */
             capella_fork_version: [0x03, 00, 00, 00],
-            capella_fork_epoch: Some(Epoch::new(18446744073709551615)),
+            capella_fork_epoch: None,
 
             /*
              * Eip4844 hard fork params
@@ -970,6 +970,7 @@ pub struct Config {
     #[serde(default = "default_eip4844_fork_version")]
     #[serde(with = "eth2_serde_utils::bytes_4_hex")]
     eip4844_fork_version: [u8; 4],
+    #[serde(default)]
     #[serde(serialize_with = "serialize_fork_epoch")]
     #[serde(deserialize_with = "deserialize_fork_epoch")]
     pub eip4844_fork_epoch: Option<MaybeQuoted<Epoch>>,
diff --git a/consensus/types/src/fork_name.rs b/consensus/types/src/fork_name.rs
index 42b8bdded..89eaff798 100644
--- a/consensus/types/src/fork_name.rs
+++ b/consensus/types/src/fork_name.rs
@@ -199,7 +199,7 @@ mod test {
 
     #[test]
     fn previous_and_next_fork_consistent() {
-        assert_eq!(ForkName::Merge.next_fork(), None);
+        assert_eq!(ForkName::Eip4844.next_fork(), None);
         assert_eq!(ForkName::Base.previous_fork(), None);
 
         for (prev_fork, fork) in ForkName::list_all().into_iter().tuple_windows() {
diff --git a/testing/ef_tests/src/cases/operations.rs b/testing/ef_tests/src/cases/operations.rs
index e99728ed2..431fd829f 100644
--- a/testing/ef_tests/src/cases/operations.rs
+++ b/testing/ef_tests/src/cases/operations.rs
@@ -21,11 +21,15 @@ use state_processing::{
     ConsensusContext,
 };
 use std::fmt::Debug;
+#[cfg(not(all(feature = "withdrawals", feature = "withdrawals-processing")))]
+use std::marker::PhantomData;
 use std::path::Path;
+#[cfg(all(feature = "withdrawals", feature = "withdrawals-processing"))]
+use types::SignedBlsToExecutionChange;
 use types::{
     Attestation, AttesterSlashing, BeaconBlock, BeaconState, BlindedPayload, ChainSpec, Deposit,
-    EthSpec, ExecutionPayload, ForkName, FullPayload, ProposerSlashing, SignedBlsToExecutionChange,
-    SignedVoluntaryExit, SyncAggregate,
+    EthSpec, ExecutionPayload, ForkName, FullPayload, ProposerSlashing, SignedVoluntaryExit,
+    SyncAggregate,
 };
 
 #[derive(Debug, Clone, Default, Deserialize)]
@@ -42,7 +46,10 @@ struct ExecutionMetadata {
 /// Newtype for testing withdrawals.
 #[derive(Debug, Clone, Deserialize)]
 pub struct WithdrawalsPayload<T: EthSpec> {
+    #[cfg(all(feature = "withdrawals", feature = "withdrawals-processing"))]
     payload: FullPayload<T>,
+    #[cfg(not(all(feature = "withdrawals", feature = "withdrawals-processing")))]
+    _phantom_data: PhantomData<T>,
 }
 
 #[derive(Debug, Clone)]
diff --git a/validator_client/src/block_service.rs b/validator_client/src/block_service.rs
index 2a50b6d2e..42f626819 100644
--- a/validator_client/src/block_service.rs
+++ b/validator_client/src/block_service.rs
@@ -6,15 +6,14 @@ use crate::{
 };
 use crate::{http_metrics::metrics, validator_store::ValidatorStore};
 use environment::RuntimeContext;
-use eth2::types::{Graffiti, VariableList};
 use slog::{crit, debug, error, info, trace, warn};
 use slot_clock::SlotClock;
 use std::ops::Deref;
 use std::sync::Arc;
 use tokio::sync::mpsc;
 use types::{
-    AbstractExecPayload, BlindedPayload, BlobsSidecar, BlockType, EthSpec, ExecPayload, ForkName,
-    FullPayload, PublicKeyBytes, Slot,
+    AbstractExecPayload, BlindedPayload, BlockType, EthSpec, FullPayload, Graffiti, PublicKeyBytes,
+    Slot,
 };
 
 #[derive(Debug)]
diff --git a/validator_client/src/validator_store.rs b/validator_client/src/validator_store.rs
index 692365aec..36a0d0573 100644
--- a/validator_client/src/validator_store.rs
+++ b/validator_client/src/validator_store.rs
@@ -19,12 +19,11 @@ use std::sync::Arc;
 use task_executor::TaskExecutor;
 use types::{
     attestation::Error as AttestationError, graffiti::GraffitiString, AbstractExecPayload, Address,
-    AggregateAndProof, Attestation, BeaconBlock, BlindedPayload, BlobsSidecar, ChainSpec,
-    ContributionAndProof, Domain, Epoch, EthSpec, ExecPayload, Fork, FullPayload, Graffiti,
-    Hash256, Keypair, PublicKeyBytes, SelectionProof, Signature, SignedAggregateAndProof,
-    SignedBeaconBlock, SignedContributionAndProof, SignedRoot, SignedValidatorRegistrationData,
-    Slot, SyncAggregatorSelectionData, SyncCommitteeContribution, SyncCommitteeMessage,
-    SyncSelectionProof, SyncSubnetId, ValidatorRegistrationData,
+    AggregateAndProof, Attestation, BeaconBlock, BlindedPayload, ChainSpec, ContributionAndProof,
+    Domain, Epoch, EthSpec, Fork, Graffiti, Hash256, Keypair, PublicKeyBytes, SelectionProof,
+    Signature, SignedAggregateAndProof, SignedBeaconBlock, SignedContributionAndProof, SignedRoot,
+    SignedValidatorRegistrationData, Slot, SyncAggregatorSelectionData, SyncCommitteeContribution,
+    SyncCommitteeMessage, SyncSelectionProof, SyncSubnetId, ValidatorRegistrationData,
 };
 use validator_dir::ValidatorDir;