diff --git a/api/client/beacon/checkpoint_test.go b/api/client/beacon/checkpoint_test.go
index 33e2dea5d..ba3cc7576 100644
--- a/api/client/beacon/checkpoint_test.go
+++ b/api/client/beacon/checkpoint_test.go
@@ -123,6 +123,8 @@ func TestDownloadBackwardsCompatibleCombined(t *testing.T) {
 	cfg.AltairForkEpoch = 299
 	cfg.BellatrixForkEpoch = 300
 	cfg.CapellaForkEpoch = 301
+	cfg.DenebForkEpoch = 302
+	cfg.AlpacaForkEpoch = 303
 	cfg.InitializeForkSchedule()
 	params.OverrideBeaconConfig(cfg)
 
diff --git a/beacon-chain/blockchain/receive_block_test.go b/beacon-chain/blockchain/receive_block_test.go
index 37f10cc2a..df34e4180 100644
--- a/beacon-chain/blockchain/receive_block_test.go
+++ b/beacon-chain/blockchain/receive_block_test.go
@@ -27,6 +27,12 @@ import (
 )
 
 func TestService_ReceiveBlock(t *testing.T) {
+	params.SetupTestConfigCleanup(t)
+	cfg := params.BeaconConfig()
+	cfg.DenebForkEpoch = 3
+	cfg.AlpacaForkEpoch = 5
+	params.OverrideBeaconConfig(cfg)
+
 	ctx := context.Background()
 
 	genesis, keys := util.DeterministicGenesisState(t, 64)
diff --git a/beacon-chain/core/blocks/exit_test.go b/beacon-chain/core/blocks/exit_test.go
index 0954a45f3..c1d70560b 100644
--- a/beacon-chain/core/blocks/exit_test.go
+++ b/beacon-chain/core/blocks/exit_test.go
@@ -82,6 +82,13 @@ func TestProcessVoluntaryExits_ExitAlreadySubmitted(t *testing.T) {
 }
 
 func TestProcessVoluntaryExits_AppliesCorrectStatus(t *testing.T) {
+	params.SetupTestConfigCleanup(t)
+	cfg := params.BeaconConfig()
+	cfg.CapellaForkEpoch = 300
+	cfg.DenebForkEpoch = 301
+	cfg.AlpacaForkEpoch = 302
+	params.OverrideBeaconConfig(cfg)
+
 	exits := []*ethpb.SignedVoluntaryExit{
 		{
 			Exit: &ethpb.VoluntaryExit{
diff --git a/beacon-chain/core/helpers/validators_test.go b/beacon-chain/core/helpers/validators_test.go
index b75051a97..37ac8a754 100644
--- a/beacon-chain/core/helpers/validators_test.go
+++ b/beacon-chain/core/helpers/validators_test.go
@@ -789,6 +789,7 @@ func TestComputeProposerIndex(t *testing.T) {
 }
 
 func TestIsEligibleForActivationQueue(t *testing.T) {
+	params.SetupForkEpochConfigForTest()
 	tests := []struct {
 		name         string
 		validator    *ethpb.Validator
diff --git a/beacon-chain/core/transition/transition_no_verify_sig_test.go b/beacon-chain/core/transition/transition_no_verify_sig_test.go
index 03472fd4a..858b2c856 100644
--- a/beacon-chain/core/transition/transition_no_verify_sig_test.go
+++ b/beacon-chain/core/transition/transition_no_verify_sig_test.go
@@ -152,6 +152,14 @@ func TestProcessBlockNoVerifyAnySigAltair_OK(t *testing.T) {
 }
 
 func TestProcessBlockNoVerify_SigSetContainsDescriptions(t *testing.T) {
+	cfg := params.MainnetConfig().Copy()
+	cfg.AltairForkEpoch = 300
+	cfg.BellatrixForkEpoch = 301
+	cfg.CapellaForkEpoch = 302
+	cfg.DenebForkEpoch = 303
+	cfg.AlpacaForkEpoch = 304
+	params.OverrideBeaconConfig(cfg)
+
 	beaconState, block, _, _, _ := createFullBlockWithOperations(t)
 	wsb, err := blocks.NewSignedBeaconBlock(block)
 	require.NoError(t, err)
diff --git a/beacon-chain/operations/attestations/prune_expired_test.go b/beacon-chain/operations/attestations/prune_expired_test.go
index 0755eadf3..3b4a6ca12 100644
--- a/beacon-chain/operations/attestations/prune_expired_test.go
+++ b/beacon-chain/operations/attestations/prune_expired_test.go
@@ -18,6 +18,12 @@ import (
 )
 
 func TestPruneExpired_Ticker(t *testing.T) {
+	params.SetupTestConfigCleanup(t)
+	cfg := params.BeaconConfig()
+	cfg.DenebForkEpoch = 3
+	cfg.AlpacaForkEpoch = 5
+	params.OverrideBeaconConfig(cfg)
+
 	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
 	defer cancel()
 
@@ -85,6 +91,12 @@ func TestPruneExpired_Ticker(t *testing.T) {
 }
 
 func TestPruneExpired_PruneExpiredAtts(t *testing.T) {
+	params.SetupTestConfigCleanup(t)
+	cfg := params.BeaconConfig()
+	cfg.DenebForkEpoch = 3
+	cfg.AlpacaForkEpoch = 5
+	params.OverrideBeaconConfig(cfg)
+
 	s, err := NewService(context.Background(), &Config{Pool: NewPool()})
 	require.NoError(t, err)
 
@@ -120,6 +132,11 @@ func TestPruneExpired_PruneExpiredAtts(t *testing.T) {
 }
 
 func TestPruneExpired_Expired(t *testing.T) {
+	params.SetupTestConfigCleanup(t)
+	cfg := params.BeaconConfig()
+	cfg.DenebForkEpoch = 3
+	params.OverrideBeaconConfig(cfg)
+
 	s, err := NewService(context.Background(), &Config{Pool: NewPool()})
 	require.NoError(t, err)
 
diff --git a/beacon-chain/operations/voluntaryexits/pool_test.go b/beacon-chain/operations/voluntaryexits/pool_test.go
index d6aad6819..06ccb5af2 100644
--- a/beacon-chain/operations/voluntaryexits/pool_test.go
+++ b/beacon-chain/operations/voluntaryexits/pool_test.go
@@ -44,6 +44,11 @@ func TestPendingExits(t *testing.T) {
 }
 
 func TestExitsForInclusion(t *testing.T) {
+	cfg := params.BeaconConfig().Copy()
+	cfg.DenebForkEpoch = 300
+	cfg.AlpacaForkEpoch = 350
+	params.OverrideBeaconConfig(cfg)
+
 	spb := &ethpb.BeaconStateCapella{
 		Fork: &ethpb.Fork{
 			CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
diff --git a/beacon-chain/rpc/eth/builder/handlers_test.go b/beacon-chain/rpc/eth/builder/handlers_test.go
index 67a14b279..2f6b28cd0 100644
--- a/beacon-chain/rpc/eth/builder/handlers_test.go
+++ b/beacon-chain/rpc/eth/builder/handlers_test.go
@@ -25,6 +25,8 @@ import (
 )
 
 func TestExpectedWithdrawals_BadRequest(t *testing.T) {
+	params.SetupForkEpochConfigForTest()
+
 	st, err := util.NewBeaconStateCapella()
 	slotsAhead := 5000
 	require.NoError(t, err)
diff --git a/beacon-chain/state/genesis/mainnet.ssz.snappy b/beacon-chain/state/genesis/mainnet.ssz.snappy
index 0aa510418..beb05f2b7 100644
Binary files a/beacon-chain/state/genesis/mainnet.ssz.snappy and b/beacon-chain/state/genesis/mainnet.ssz.snappy differ
diff --git a/beacon-chain/sync/backfill/verify_test.go b/beacon-chain/sync/backfill/verify_test.go
index 9f7fcf1ca..aca6a31ad 100644
--- a/beacon-chain/sync/backfill/verify_test.go
+++ b/beacon-chain/sync/backfill/verify_test.go
@@ -24,6 +24,7 @@ func TestDomainCache(t *testing.T) {
 	cfg.BellatrixForkEpoch = 2
 	cfg.CapellaForkEpoch = 3
 	cfg.DenebForkEpoch = 4
+	cfg.AlpacaForkEpoch = 5
 	params.OverrideBeaconConfig(cfg)
 	cfg.InitializeForkSchedule()
 
diff --git a/beacon-chain/sync/rpc_beacon_blocks_by_range_test.go b/beacon-chain/sync/rpc_beacon_blocks_by_range_test.go
index bd2f8dcf6..3d3c2b27b 100644
--- a/beacon-chain/sync/rpc_beacon_blocks_by_range_test.go
+++ b/beacon-chain/sync/rpc_beacon_blocks_by_range_test.go
@@ -559,6 +559,8 @@ func TestRPCBeaconBlocksByRange_RPCHandlerRateLimitOverflow(t *testing.T) {
 }
 
 func TestRPCBeaconBlocksByRange_validateRangeRequest(t *testing.T) {
+	params.SetupForkEpochConfigForTest()
+
 	slotsSinceGenesis := primitives.Slot(1000)
 	offset := int64(slotsSinceGenesis.Mul(params.BeaconConfig().SecondsPerSlot))
 	clock := startup.NewClock(time.Now().Add(time.Second*time.Duration(-1*offset)), [32]byte{})
diff --git a/beacon-chain/sync/validate_aggregate_proof_test.go b/beacon-chain/sync/validate_aggregate_proof_test.go
index 6376e3f42..c90f1f036 100644
--- a/beacon-chain/sync/validate_aggregate_proof_test.go
+++ b/beacon-chain/sync/validate_aggregate_proof_test.go
@@ -345,6 +345,8 @@ func TestValidateAggregateAndProof_ExistedInPool(t *testing.T) {
 }
 
 func TestValidateAggregateAndProof_CanValidate(t *testing.T) {
+	params.SetupForkEpochConfigForTest()
+
 	db := dbtest.SetupDB(t)
 	p := p2ptest.NewTestP2P(t)
 
@@ -449,6 +451,7 @@ func TestValidateAggregateAndProof_CanValidate(t *testing.T) {
 }
 
 func TestVerifyIndexInCommittee_SeenAggregatorEpoch(t *testing.T) {
+	params.SetupForkEpochConfigForTest()
 	db := dbtest.SetupDB(t)
 	p := p2ptest.NewTestP2P(t)
 
diff --git a/beacon-chain/sync/validate_beacon_attestation_test.go b/beacon-chain/sync/validate_beacon_attestation_test.go
index 2451352fb..afea98434 100644
--- a/beacon-chain/sync/validate_beacon_attestation_test.go
+++ b/beacon-chain/sync/validate_beacon_attestation_test.go
@@ -27,6 +27,8 @@ import (
 )
 
 func TestService_validateCommitteeIndexBeaconAttestation(t *testing.T) {
+	params.SetupForkEpochConfigForTest()
+
 	p := p2ptest.NewTestP2P(t)
 	db := dbtest.SetupDB(t)
 	chain := &mockChain.ChainService{
diff --git a/beacon-chain/sync/validate_beacon_blocks_test.go b/beacon-chain/sync/validate_beacon_blocks_test.go
index d2df2d39e..c15341285 100644
--- a/beacon-chain/sync/validate_beacon_blocks_test.go
+++ b/beacon-chain/sync/validate_beacon_blocks_test.go
@@ -704,6 +704,7 @@ func TestValidateBeaconBlockPubSub_RejectBlocksFromThePast(t *testing.T) {
 }
 
 func TestValidateBeaconBlockPubSub_SeenProposerSlot(t *testing.T) {
+	params.SetupForkEpochConfigForTest()
 	db := dbtest.SetupDB(t)
 	p := p2ptest.NewTestP2P(t)
 	ctx := context.Background()
@@ -901,6 +902,7 @@ func TestValidateBeaconBlockPubSub_ParentNotFinalizedDescendant(t *testing.T) {
 }
 
 func TestValidateBeaconBlockPubSub_InvalidParentBlock(t *testing.T) {
+	params.SetupForkEpochConfigForTest()
 	db := dbtest.SetupDB(t)
 	p := p2ptest.NewTestP2P(t)
 	ctx := context.Background()
@@ -1177,6 +1179,7 @@ func TestService_isBlockQueueable(t *testing.T) {
 }
 
 func TestValidateBeaconBlockPubSub_ValidExecutionPayload(t *testing.T) {
+	params.SetupForkEpochConfigForTest()
 	db := dbtest.SetupDB(t)
 	p := p2ptest.NewTestP2P(t)
 	ctx := context.Background()
@@ -1409,6 +1412,7 @@ func Test_validateBellatrixBeaconBlockParentValidation(t *testing.T) {
 }
 
 func Test_validateBeaconBlockProcessingWhenParentIsOptimistic(t *testing.T) {
+	params.SetupForkEpochConfigForTest()
 	db := dbtest.SetupDB(t)
 	p := p2ptest.NewTestP2P(t)
 	ctx := context.Background()
diff --git a/beacon-chain/sync/validate_blob_test.go b/beacon-chain/sync/validate_blob_test.go
index 29164df8c..fef3f7b36 100644
--- a/beacon-chain/sync/validate_blob_test.go
+++ b/beacon-chain/sync/validate_blob_test.go
@@ -144,6 +144,7 @@ func TestValidateBlob_AlreadySeenInCache(t *testing.T) {
 }
 
 func TestValidateBlob_InvalidTopicIndex(t *testing.T) {
+	params.SetupForkEpochConfigForTest()
 	ctx := context.Background()
 	p := p2ptest.NewTestP2P(t)
 	chainService := &mock.ChainService{Genesis: time.Unix(time.Now().Unix()-int64(params.BeaconConfig().SecondsPerSlot), 0)}
diff --git a/config/params/mainnet_config.go b/config/params/mainnet_config.go
index 097963991..241d39260 100644
--- a/config/params/mainnet_config.go
+++ b/config/params/mainnet_config.go
@@ -26,11 +26,11 @@ const (
 	// Bellatrix Fork Epoch for mainnet config.
 	mainnetBellatrixForkEpoch = 0 // epoch 0
 	// Capella Fork Epoch for mainnet config.
-	mainnetCapellaForkEpoch = 10 // epoch 10
+	mainnetCapellaForkEpoch = 0 // epoch 0
 	// Deneb Fork Epoch for mainnet config.
-	mainnetDenebForkEpoch = math.MaxUint64 // not activated
+	mainnetDenebForkEpoch = 0 // epoch 0
 	// Alpaca Fork Epoch for mainnet config
-	mainnetAlpacaForkEpoch = math.MaxUint64 // Far future / to be defined
+	mainnetAlpacaForkEpoch = 0 // epoch 0
 )
 
 var mainnetNetworkConfig = &NetworkConfig{
@@ -40,8 +40,8 @@ var mainnetNetworkConfig = &NetworkConfig{
 	ContractDeploymentBlock:    0, // Note: contract was deployed in genesis block.
 	BootstrapNodes: []string{
 		// Over Mainnet Bootnodes
-		"enr:-LG4QMDxg9JWyQFDFDmNWYgsTBhH5dFmIW-X8q6g6S-3ZpDcMu6ouv4NnCOvZ9BGsIkWrwtx2iVaUAJn7dgS_TEA_XOGAZGN3idXh2F0dG5ldHOIAAAAAAAAAACCaWSCdjSCaXCEj8Zt-YRvdmVykNBNsU8AAAAY__________-Jc2VjcDI1NmsxoQOuL8NQY7JaHKQ43e9HleHJNX0fBiGnX80b5y0z1fl82oN1ZHCCyyA", // Bootnode1
-		"enr:-LG4QCu6n9asLF4GydPqGVMhGvM3QJ4CPdGTmxehYTnYWh17eh26of_NXeeh7f5YxMtR3MOnibbQ_iWo_WjREufzv-SGAZGN3icdh2F0dG5ldHOIAAAAAAAAAACCaWSCdjSCaXCEmCriZYRvdmVykNBNsU8AAAAY__________-Jc2VjcDI1NmsxoQJUB5E3lpebYb4TgRatlNrvOxqhSmeX9ZwWOCEND5cllIN1ZHCCyyA", // Bootnode2
+		"enr:-LG4QKpZY1Wji0rB5pvSusDdWWrLM3WuRuuudXTeBZZGlTgQdWgdJX6Yjzn487rhZfAPt7JYddJo4KK3jLZELa6xxNiGAZOdArmMh2F0dG5ldHOIAAAAAAAAAACCaWSCdjSCaXCEnfU0eoRvdmVykNBNsU8AAAAY__________-Jc2VjcDI1NmsxoQMv1vYgI8uEPbb6cSuvryE0T8-BzslN9B8piob2HqNdZYN1ZHCCyyA", // Bootnode1
+		"enr:-LG4QFT8l2xOTCGb7aXpaI0y9h2ndO9iMpXUNyFHG19WAmbUGC8zcB-Yx2_CniAexWnDgHA2zoLtX_LPah1kJV4QLYSGAZOdArmUh2F0dG5ldHOIAAAAAAAAAACCaWSCdjSCaXCEnfUwuYRvdmVykNBNsU8AAAAY__________-Jc2VjcDI1NmsxoQPMOuY4Rfww4PkAD-0mlUTsPU-mCAV2FT96IwS9Or3j2YN1ZHCCyyA", // Bootnode2
 	},
 }
 
@@ -162,7 +162,7 @@ var mainnetBeaconConfig = &BeaconChainConfig{
 	DomainApplicationBuilder: bytesutil.Uint32ToBytes4(0x00000001),
 
 	// Prysm constants.
-	GenesisValidatorsRoot:          [32]byte{116, 251, 77, 166, 135, 32, 137, 147, 238, 130, 34, 6, 238, 31, 73, 21, 196, 191, 158, 92, 157, 62, 103, 50, 199, 117, 185, 152, 44, 159, 128, 132},
+	GenesisValidatorsRoot:          [32]byte{226, 76, 93, 178, 184, 48, 49, 145, 55, 48, 26, 117, 222, 207, 221, 94, 121, 63, 127, 122, 205, 104, 23, 114, 121, 150, 248, 36, 133, 108, 200, 221},
 	GweiPerEth:                     1000000000,
 	BLSSecretKeyLength:             32,
 	BLSPubkeyLength:                48,
diff --git a/config/params/mainnet_config_test.go b/config/params/mainnet_config_test.go
index ec680d6f5..f72f97613 100644
--- a/config/params/mainnet_config_test.go
+++ b/config/params/mainnet_config_test.go
@@ -12,10 +12,6 @@ func TestMaxRequestBlock(t *testing.T) {
 		expectedMaxBlock uint64
 		description      string
 	}{
-		{
-			epoch:            primitives.Epoch(mainnetDenebForkEpoch - 1), // Assuming the fork epoch is not 0
-			expectedMaxBlock: mainnetBeaconConfig.MaxRequestBlocks,
-		},
 		{
 			epoch:            primitives.Epoch(mainnetDenebForkEpoch),
 			expectedMaxBlock: mainnetBeaconConfig.MaxRequestBlocksDeneb,
diff --git a/config/params/testutils.go b/config/params/testutils.go
index 412f284a7..08c2e9fcb 100644
--- a/config/params/testutils.go
+++ b/config/params/testutils.go
@@ -47,6 +47,7 @@ func SetupForkEpochConfigForTest() {
 	cfg.BellatrixForkEpoch = 144896
 	cfg.CapellaForkEpoch = 194048
 	cfg.DenebForkEpoch = 269568
+	cfg.AlpacaForkEpoch = 342308
 	cfg.InitializeForkSchedule()
 	OverrideBeaconConfig(cfg)
 }
diff --git a/testing/util/block_test.go b/testing/util/block_test.go
index 09b1e27c5..bd1298427 100644
--- a/testing/util/block_test.go
+++ b/testing/util/block_test.go
@@ -171,6 +171,14 @@ func TestGenerateFullBlock_ValidDeposits(t *testing.T) {
 }
 
 func TestGenerateFullBlock_ValidVoluntaryExits(t *testing.T) {
+	config := params.BeaconConfig()
+	config.AltairForkEpoch = 301
+	config.BellatrixForkEpoch = 302
+	config.CapellaForkEpoch = 303
+	config.DenebForkEpoch = 304
+	config.AlpacaForkEpoch = 305
+	params.OverrideBeaconConfig(config)
+
 	beaconState, privs := DeterministicGenesisState(t, 256)
 	// Moving the state 2048 epochs forward due to PERSISTENT_COMMITTEE_PERIOD.
 	err := beaconState.SetSlot(params.BeaconConfig().SlotsPerEpoch.Mul(uint64(params.BeaconConfig().ShardCommitteePeriod)).Add(3))
@@ -363,6 +371,8 @@ func TestGenerateVoluntaryExits(t *testing.T) {
 	params.SetupTestConfigCleanup(t)
 	config := params.BeaconConfig()
 	config.ShardCommitteePeriod = 0
+	config.DenebForkEpoch = 10
+	config.AlpacaForkEpoch = 15
 	params.OverrideBeaconConfig(config)
 
 	beaconState, privKeys := DeterministicGenesisState(t, 256)
diff --git a/validator/client/aggregate_test.go b/validator/client/aggregate_test.go
index 6b45bb130..445f00921 100644
--- a/validator/client/aggregate_test.go
+++ b/validator/client/aggregate_test.go
@@ -42,6 +42,7 @@ func TestSubmitAggregateAndProof_GetDutiesRequestFailure(t *testing.T) {
 func TestSubmitAggregateAndProof_SignFails(t *testing.T) {
 	for _, isSlashingProtectionMinimal := range [...]bool{false, true} {
 		t.Run(fmt.Sprintf("SlashingProtectionMinimal:%v", isSlashingProtectionMinimal), func(t *testing.T) {
+			params.SetupForkEpochConfigForTest()
 			validator, m, validatorKey, finish := setup(t, isSlashingProtectionMinimal)
 			defer finish()
 			var pubKey [fieldparams.BLSPubkeyLength]byte
@@ -87,6 +88,7 @@ func TestSubmitAggregateAndProof_SignFails(t *testing.T) {
 func TestSubmitAggregateAndProof_Ok(t *testing.T) {
 	for _, isSlashingProtectionMinimal := range [...]bool{false, true} {
 		t.Run(fmt.Sprintf("Phase 0 (SlashingProtectionMinimal:%v)", isSlashingProtectionMinimal), func(t *testing.T) {
+			params.SetupForkEpochConfigForTest()
 			validator, m, validatorKey, finish := setup(t, isSlashingProtectionMinimal)
 			defer finish()
 			var pubKey [fieldparams.BLSPubkeyLength]byte
@@ -193,6 +195,7 @@ func TestSubmitAggregateAndProof_Distributed(t *testing.T) {
 	ctx := context.Background()
 	for _, isSlashingProtectionMinimal := range [...]bool{false, true} {
 		t.Run(fmt.Sprintf("SlashingProtectionMinimal:%v", isSlashingProtectionMinimal), func(t *testing.T) {
+			params.SetupForkEpochConfigForTest()
 			validator, m, validatorKey, finish := setup(t, isSlashingProtectionMinimal)
 			defer finish()
 
diff --git a/validator/client/attest_test.go b/validator/client/attest_test.go
index ea632ae85..adbec9965 100644
--- a/validator/client/attest_test.go
+++ b/validator/client/attest_test.go
@@ -70,6 +70,7 @@ func TestAttestToBlockHead_SubmitAttestation_EmptyCommittee(t *testing.T) {
 func TestAttestToBlockHead_SubmitAttestation_RequestFailure(t *testing.T) {
 	for _, isSlashingProtectionMinimal := range [...]bool{false, true} {
 		t.Run(fmt.Sprintf("SlashingProtectionMinimal:%v", isSlashingProtectionMinimal), func(t *testing.T) {
+			params.SetupForkEpochConfigForTest()
 			hook := logTest.NewGlobal()
 
 			validator, m, validatorKey, finish := setup(t, isSlashingProtectionMinimal)
@@ -109,6 +110,8 @@ func TestAttestToBlockHead_SubmitAttestation_RequestFailure(t *testing.T) {
 func TestAttestToBlockHead_AttestsCorrectly(t *testing.T) {
 	for _, isSlashingProtectionMinimal := range [...]bool{false, true} {
 		t.Run(fmt.Sprintf("Phase 0 (SlashingProtectionMinimal:%v)", isSlashingProtectionMinimal), func(t *testing.T) {
+			params.SetupTestConfigCleanup(t)
+			params.SetupForkEpochConfigForTest()
 			validator, m, validatorKey, finish := setup(t, isSlashingProtectionMinimal)
 			defer finish()
 			hook := logTest.NewGlobal()
@@ -269,6 +272,7 @@ func TestAttestToBlockHead_AttestsCorrectly(t *testing.T) {
 func TestAttestToBlockHead_BlocksDoubleAtt(t *testing.T) {
 	for _, isSlashingProtectionMinimal := range [...]bool{false, true} {
 		t.Run(fmt.Sprintf("SlashingProtectionMinimal:%v", isSlashingProtectionMinimal), func(t *testing.T) {
+			params.SetupForkEpochConfigForTest()
 			hook := logTest.NewGlobal()
 			validator, m, validatorKey, finish := setup(t, isSlashingProtectionMinimal)
 			defer finish()
@@ -325,6 +329,7 @@ func TestAttestToBlockHead_BlocksDoubleAtt(t *testing.T) {
 func TestAttestToBlockHead_BlocksSurroundAtt(t *testing.T) {
 	for _, isSlashingProtectionMinimal := range [...]bool{false, true} {
 		t.Run(fmt.Sprintf("SlashingProtectionMinimal:%v", isSlashingProtectionMinimal), func(t *testing.T) {
+			params.SetupForkEpochConfigForTest()
 			hook := logTest.NewGlobal()
 			validator, m, validatorKey, finish := setup(t, isSlashingProtectionMinimal)
 			defer finish()
@@ -381,6 +386,7 @@ func TestAttestToBlockHead_BlocksSurroundAtt(t *testing.T) {
 func TestAttestToBlockHead_BlocksSurroundedAtt(t *testing.T) {
 	for _, isSlashingProtectionMinimal := range [...]bool{false, true} {
 		t.Run(fmt.Sprintf("SlashingProtectionMinimal:%v", isSlashingProtectionMinimal), func(t *testing.T) {
+			params.SetupForkEpochConfigForTest()
 			hook := logTest.NewGlobal()
 			validator, m, validatorKey, finish := setup(t, isSlashingProtectionMinimal)
 			defer finish()
@@ -471,6 +477,7 @@ func TestAttestToBlockHead_DoesNotAttestBeforeDelay(t *testing.T) {
 func TestAttestToBlockHead_DoesAttestAfterDelay(t *testing.T) {
 	for _, isSlashingProtectionMinimal := range [...]bool{false, true} {
 		t.Run(fmt.Sprintf("SlashingProtectionMinimal:%v", isSlashingProtectionMinimal), func(t *testing.T) {
+			params.SetupForkEpochConfigForTest()
 			validator, m, validatorKey, finish := setup(t, isSlashingProtectionMinimal)
 			defer finish()
 
@@ -520,6 +527,7 @@ func TestAttestToBlockHead_DoesAttestAfterDelay(t *testing.T) {
 func TestAttestToBlockHead_CorrectBitfieldLength(t *testing.T) {
 	for _, isSlashingProtectionMinimal := range [...]bool{false, true} {
 		t.Run(fmt.Sprintf("SlashingProtectionMinimal:%v", isSlashingProtectionMinimal), func(t *testing.T) {
+			params.SetupForkEpochConfigForTest()
 			validator, m, validatorKey, finish := setup(t, isSlashingProtectionMinimal)
 			defer finish()
 			validatorIndex := primitives.ValidatorIndex(2)
diff --git a/validator/client/beacon-api/domain_data_test.go b/validator/client/beacon-api/domain_data_test.go
index 67964feb0..4766829c2 100644
--- a/validator/client/beacon-api/domain_data_test.go
+++ b/validator/client/beacon-api/domain_data_test.go
@@ -17,8 +17,8 @@ import (
 
 func TestGetDomainData_ValidDomainData(t *testing.T) {
 	const genesisValidatorRoot = "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
-	forkVersion := params.BeaconConfig().BellatrixForkVersion
-	epoch := params.BeaconConfig().BellatrixForkEpoch
+	forkVersion := params.BeaconConfig().AlpacaForkVersion
+	epoch := params.BeaconConfig().AlpacaForkEpoch
 	domainType := params.BeaconConfig().DomainBeaconProposer
 
 	genesisValidatorRootBytes, err := hexutil.Decode(genesisValidatorRoot)
diff --git a/validator/client/metrics_test.go b/validator/client/metrics_test.go
index f72148e03..028356b93 100644
--- a/validator/client/metrics_test.go
+++ b/validator/client/metrics_test.go
@@ -14,6 +14,10 @@ import (
 )
 
 func TestUpdateLogAggregateStats(t *testing.T) {
+	cfg := params.BeaconConfig().Copy()
+	cfg.AltairForkEpoch = 1
+	cfg.InitializeForkSchedule()
+	params.OverrideBeaconConfig(cfg)
 	v := &validator{
 		logValidatorPerformance: true,
 		startBalances:           make(map[[fieldparams.BLSPubkeyLength]byte]uint64),
@@ -88,6 +92,10 @@ func TestUpdateLogAggregateStats(t *testing.T) {
 }
 
 func TestUpdateLogAltairAggregateStats(t *testing.T) {
+	cfg := params.BeaconConfig().Copy()
+	cfg.AltairForkEpoch = 1
+	cfg.InitializeForkSchedule()
+	params.OverrideBeaconConfig(cfg)
 	v := &validator{
 		logValidatorPerformance: true,
 		startBalances:           make(map[[fieldparams.BLSPubkeyLength]byte]uint64),
@@ -158,7 +166,7 @@ func TestUpdateLogAltairAggregateStats(t *testing.T) {
 	}
 
 	require.LogsContain(t, hook, "msg=\"Previous epoch aggregated voting summary\" attestationInclusionPct=\"67%\" "+
-		"averageInactivityScore=0 correctlyVotedHeadPct=\"100%\" correctlyVotedSourcePct=\"100%\" correctlyVotedTargetPct=\"50%\" epoch=2")
+		"averageInactivityScore=0 correctlyVotedHeadPct=\"100%\" correctlyVotedSourcePct=\"100%\" correctlyVotedTargetPct=\"50%\" epoch=3")
 	require.LogsContain(t, hook, "msg=\"Vote summary since launch\" attestationsInclusionPct=\"78%\" "+
 		"correctlyVotedHeadPct=\"86%\" correctlyVotedSourcePct=\"100%\" "+
 		"correctlyVotedTargetPct=\"71%\" numberOfEpochs=3 pctChangeCombinedBalance=\"0.20555%\"")
diff --git a/validator/keymanager/remote-web3signer/v1/mock/mocks.go b/validator/keymanager/remote-web3signer/v1/mock/mocks.go
index cf206457a..8623ea14a 100644
--- a/validator/keymanager/remote-web3signer/v1/mock/mocks.go
+++ b/validator/keymanager/remote-web3signer/v1/mock/mocks.go
@@ -525,8 +525,8 @@ func ValidatorRegistrationSignRequest() *v1.ValidatorRegistrationSignRequest {
 func ForkInfo() *v1.ForkInfo {
 	return &v1.ForkInfo{
 		Fork: &v1.Fork{
-			PreviousVersion: []byte{0x01, 0x00, 0x00, 0x18},
-			CurrentVersion:  []byte{0x02, 0x00, 0x00, 0x18},
+			PreviousVersion: []byte{0x04, 0x00, 0x00, 0x18},
+			CurrentVersion:  []byte{0x05, 0x00, 0x00, 0x18},
 			Epoch:           "0",
 		},
 		GenesisValidatorsRoot: make([]byte, fieldparams.RootLength),