diff --git a/node/service/src/lib.rs b/node/service/src/lib.rs
index 96807fdad0..834692128e 100644
--- a/node/service/src/lib.rs
+++ b/node/service/src/lib.rs
@@ -30,7 +30,7 @@ use cumulus_client_network::BlockAnnounceValidator;
 use cumulus_client_service::{
 	prepare_node_config, start_collator, start_full_node, StartCollatorParams, StartFullNodeParams,
 };
-use cumulus_primitives_core::relay_chain::v2::CollatorPair;
+use cumulus_primitives_core::relay_chain::CollatorPair;
 use cumulus_primitives_core::ParaId;
 use cumulus_primitives_parachain_inherent::{
 	MockValidationDataInherentDataProvider, MockXcmConfig,
diff --git a/pallets/xcm-transactor/src/lib.rs b/pallets/xcm-transactor/src/lib.rs
index 34a57d782a..2d0a7d7567 100644
--- a/pallets/xcm-transactor/src/lib.rs
+++ b/pallets/xcm-transactor/src/lib.rs
@@ -89,7 +89,7 @@ pub mod pallet {
 
 	use crate::weights::WeightInfo;
 	use crate::CurrencyIdOf;
-	use cumulus_primitives_core::{relay_chain::v2::HrmpChannelId, ParaId};
+	use cumulus_primitives_core::{relay_chain::HrmpChannelId, ParaId};
 	use frame_support::{pallet_prelude::*, weights::constants::WEIGHT_REF_TIME_PER_SECOND};
 	use frame_system::{ensure_signed, pallet_prelude::*};
 	use orml_traits::location::{Parse, Reserve};
diff --git a/pallets/xcm-transactor/src/tests.rs b/pallets/xcm-transactor/src/tests.rs
index 4a2ff060ad..1bd605e354 100644
--- a/pallets/xcm-transactor/src/tests.rs
+++ b/pallets/xcm-transactor/src/tests.rs
@@ -16,7 +16,7 @@
 
 use crate::mock::*;
 use crate::*;
-use cumulus_primitives_core::relay_chain::v2::HrmpChannelId;
+use cumulus_primitives_core::relay_chain::HrmpChannelId;
 use frame_support::dispatch::DispatchError;
 use frame_support::{assert_noop, assert_ok, weights::constants::WEIGHT_REF_TIME_PER_SECOND};
 use sp_std::boxed::Box;
diff --git a/precompiles/relay-encoder/src/lib.rs b/precompiles/relay-encoder/src/lib.rs
index 284934a04a..db23f470e4 100644
--- a/precompiles/relay-encoder/src/lib.rs
+++ b/precompiles/relay-encoder/src/lib.rs
@@ -326,7 +326,7 @@ where
 		handle.record_cost(RuntimeHelper::<Runtime>::db_read_gas_cost())?;
 
 		let encoded = RelayRuntime::hrmp_encode_call(HrmpAvailableCalls::CloseChannel(
-			relay_chain::v2::HrmpChannelId {
+			relay_chain::HrmpChannelId {
 				sender: sender.into(),
 				recipient: recipient.into(),
 			},
diff --git a/precompiles/relay-encoder/src/test_relay_runtime.rs b/precompiles/relay-encoder/src/test_relay_runtime.rs
index 10a127e2d6..d91d0454a0 100644
--- a/precompiles/relay-encoder/src/test_relay_runtime.rs
+++ b/precompiles/relay-encoder/src/test_relay_runtime.rs
@@ -16,7 +16,7 @@
 
 use crate::AvailableStakeCalls;
 use crate::StakeEncodeCall;
-use cumulus_primitives_core::{relay_chain::v2::HrmpChannelId, ParaId};
+use cumulus_primitives_core::{relay_chain::HrmpChannelId, ParaId};
 use parity_scale_codec::{Decode, Encode};
 use sp_runtime::traits::{AccountIdLookup, StaticLookup};
 use sp_runtime::AccountId32;
diff --git a/primitives/xcm/src/transactor_traits.rs b/primitives/xcm/src/transactor_traits.rs
index a5c0b17872..3ac48df808 100644
--- a/primitives/xcm/src/transactor_traits.rs
+++ b/primitives/xcm/src/transactor_traits.rs
@@ -13,7 +13,7 @@
 
 // You should have received a copy of the GNU General Public License
 
-use cumulus_primitives_core::{relay_chain::v2::HrmpChannelId, ParaId};
+use cumulus_primitives_core::{relay_chain::HrmpChannelId, ParaId};
 use sp_std::vec::Vec;
 use xcm::latest::{Error as XcmError, MultiLocation};
 
diff --git a/runtime/moonbase/src/lib.rs b/runtime/moonbase/src/lib.rs
index d03635935b..7039c3f5d6 100644
--- a/runtime/moonbase/src/lib.rs
+++ b/runtime/moonbase/src/lib.rs
@@ -145,7 +145,7 @@ pub mod currency {
 /// Maximum weight per block
 pub const MAXIMUM_BLOCK_WEIGHT: Weight = Weight::from_ref_time(WEIGHT_REF_TIME_PER_SECOND)
 	.saturating_div(2)
-	.set_proof_size(cumulus_primitives_core::relay_chain::v2::MAX_POV_SIZE as u64);
+	.set_proof_size(cumulus_primitives_core::relay_chain::MAX_POV_SIZE as u64);
 
 pub const MILLISECS_PER_BLOCK: u64 = 12000;
 pub const MINUTES: BlockNumber = 60_000 / (MILLISECS_PER_BLOCK as BlockNumber);
diff --git a/runtime/moonbase/tests/xcm_mock/parachain.rs b/runtime/moonbase/tests/xcm_mock/parachain.rs
index 79d8df7538..978e2e764f 100644
--- a/runtime/moonbase/tests/xcm_mock/parachain.rs
+++ b/runtime/moonbase/tests/xcm_mock/parachain.rs
@@ -38,7 +38,7 @@ use sp_runtime::{
 use sp_std::{convert::TryFrom, prelude::*};
 use xcm::{latest::prelude::*, Version as XcmVersion, VersionedXcm};
 
-use cumulus_primitives_core::relay_chain::v2::HrmpChannelId;
+use cumulus_primitives_core::relay_chain::HrmpChannelId;
 use orml_traits::parameter_type_with_key;
 use polkadot_core_primitives::BlockNumber as RelayBlockNumber;
 use polkadot_parachain::primitives::{Id as ParaId, Sibling};
diff --git a/runtime/moonbase/tests/xcm_tests.rs b/runtime/moonbase/tests/xcm_tests.rs
index e452dcfc77..a56b5866a0 100644
--- a/runtime/moonbase/tests/xcm_tests.rs
+++ b/runtime/moonbase/tests/xcm_tests.rs
@@ -36,7 +36,7 @@ use xcm_primitives::UtilityEncodeCall;
 use xcm_simulator::TestExt;
 mod common;
 use common::ExtBuilder;
-use cumulus_primitives_core::relay_chain::v2::HrmpChannelId;
+use cumulus_primitives_core::relay_chain::HrmpChannelId;
 // Send a relay asset (like DOT) to a parachain A
 #[test]
 fn receive_relay_asset_from_relay() {
diff --git a/runtime/moonbeam/src/lib.rs b/runtime/moonbeam/src/lib.rs
index d66d81cd85..734c0f9a00 100644
--- a/runtime/moonbeam/src/lib.rs
+++ b/runtime/moonbeam/src/lib.rs
@@ -136,7 +136,7 @@ pub mod currency {
 /// Maximum weight per block
 pub const MAXIMUM_BLOCK_WEIGHT: Weight = Weight::from_ref_time(WEIGHT_REF_TIME_PER_SECOND)
 	.saturating_div(2)
-	.set_proof_size(cumulus_primitives_core::relay_chain::v2::MAX_POV_SIZE as u64);
+	.set_proof_size(cumulus_primitives_core::relay_chain::MAX_POV_SIZE as u64);
 
 pub const MILLISECS_PER_BLOCK: u64 = 12000;
 pub const MINUTES: BlockNumber = 60_000 / (MILLISECS_PER_BLOCK as BlockNumber);
diff --git a/runtime/moonbeam/tests/xcm_mock/parachain.rs b/runtime/moonbeam/tests/xcm_mock/parachain.rs
index b4bf79067f..6b9cb71aae 100644
--- a/runtime/moonbeam/tests/xcm_mock/parachain.rs
+++ b/runtime/moonbeam/tests/xcm_mock/parachain.rs
@@ -25,7 +25,7 @@ use frame_support::{
 	PalletId,
 };
 
-use cumulus_primitives_core::relay_chain::v2::HrmpChannelId;
+use cumulus_primitives_core::relay_chain::HrmpChannelId;
 use frame_system::{EnsureNever, EnsureRoot};
 use orml_traits::parameter_type_with_key;
 use parity_scale_codec::{Decode, Encode};
diff --git a/runtime/moonbeam/tests/xcm_tests.rs b/runtime/moonbeam/tests/xcm_tests.rs
index f5ad60943a..4cdfeed44e 100644
--- a/runtime/moonbeam/tests/xcm_tests.rs
+++ b/runtime/moonbeam/tests/xcm_tests.rs
@@ -27,7 +27,7 @@ use xcm_mock::parachain;
 use xcm_mock::relay_chain;
 use xcm_mock::*;
 
-use cumulus_primitives_core::relay_chain::v2::HrmpChannelId;
+use cumulus_primitives_core::relay_chain::HrmpChannelId;
 use pallet_asset_manager::LocalAssetIdCreator;
 use pallet_xcm_transactor::{
 	Currency, CurrencyPayment, HrmpInitParams, HrmpOperation, TransactWeights,
diff --git a/runtime/moonriver/src/lib.rs b/runtime/moonriver/src/lib.rs
index 81f402e2ef..394333cd35 100644
--- a/runtime/moonriver/src/lib.rs
+++ b/runtime/moonriver/src/lib.rs
@@ -140,7 +140,7 @@ pub mod currency {
 /// Maximum weight per block
 pub const MAXIMUM_BLOCK_WEIGHT: Weight = Weight::from_ref_time(WEIGHT_REF_TIME_PER_SECOND)
 	.saturating_div(2)
-	.set_proof_size(cumulus_primitives_core::relay_chain::v2::MAX_POV_SIZE as u64);
+	.set_proof_size(cumulus_primitives_core::relay_chain::MAX_POV_SIZE as u64);
 
 pub const MILLISECS_PER_BLOCK: u64 = 12000;
 pub const MINUTES: BlockNumber = 60_000 / (MILLISECS_PER_BLOCK as BlockNumber);
diff --git a/runtime/moonriver/tests/xcm_mock/parachain.rs b/runtime/moonriver/tests/xcm_mock/parachain.rs
index 1aef811dd2..8fc4894f93 100644
--- a/runtime/moonriver/tests/xcm_mock/parachain.rs
+++ b/runtime/moonriver/tests/xcm_mock/parachain.rs
@@ -34,7 +34,7 @@ use sp_runtime::{
 use sp_std::{convert::TryFrom, prelude::*};
 use xcm::{latest::prelude::*, Version as XcmVersion, VersionedXcm};
 
-use cumulus_primitives_core::relay_chain::v2::HrmpChannelId;
+use cumulus_primitives_core::relay_chain::HrmpChannelId;
 use orml_traits::parameter_type_with_key;
 use polkadot_core_primitives::BlockNumber as RelayBlockNumber;
 use polkadot_parachain::primitives::{Id as ParaId, Sibling};
diff --git a/runtime/moonriver/tests/xcm_tests.rs b/runtime/moonriver/tests/xcm_tests.rs
index 8d411af918..3ac77af2cb 100644
--- a/runtime/moonriver/tests/xcm_tests.rs
+++ b/runtime/moonriver/tests/xcm_tests.rs
@@ -32,7 +32,7 @@ use xcm_mock::*;
 use xcm_simulator::TestExt;
 mod common;
 use common::ExtBuilder;
-use cumulus_primitives_core::relay_chain::v2::HrmpChannelId;
+use cumulus_primitives_core::relay_chain::HrmpChannelId;
 use pallet_xcm_transactor::{
 	Currency, CurrencyPayment, HrmpInitParams, HrmpOperation, TransactWeights,
 };
diff --git a/runtime/relay-encoder/src/kusama.rs b/runtime/relay-encoder/src/kusama.rs
index b6959cd1a4..59222476b0 100644
--- a/runtime/relay-encoder/src/kusama.rs
+++ b/runtime/relay-encoder/src/kusama.rs
@@ -17,7 +17,7 @@
 // We want to avoid including the rococo-runtime here.
 // TODO: whenever a conclusion is taken from https://github.com/paritytech/substrate/issues/8158
 
-use cumulus_primitives_core::{relay_chain::v2::HrmpChannelId, ParaId};
+use cumulus_primitives_core::{relay_chain::HrmpChannelId, ParaId};
 use parity_scale_codec::{Decode, Encode};
 use sp_runtime::traits::{AccountIdLookup, StaticLookup};
 use sp_runtime::AccountId32;
diff --git a/runtime/relay-encoder/src/polkadot.rs b/runtime/relay-encoder/src/polkadot.rs
index 076e896e16..2739176d03 100644
--- a/runtime/relay-encoder/src/polkadot.rs
+++ b/runtime/relay-encoder/src/polkadot.rs
@@ -17,7 +17,7 @@
 // We want to avoid including the rococo-runtime here.
 // TODO: whenever a conclusion is taken from https://github.com/paritytech/substrate/issues/8158
 
-use cumulus_primitives_core::{relay_chain::v2::HrmpChannelId, ParaId};
+use cumulus_primitives_core::{relay_chain::HrmpChannelId, ParaId};
 use parity_scale_codec::{Decode, Encode};
 use sp_runtime::traits::{AccountIdLookup, StaticLookup};
 use sp_runtime::AccountId32;
diff --git a/runtime/relay-encoder/src/westend.rs b/runtime/relay-encoder/src/westend.rs
index d83b720fee..9da131502f 100644
--- a/runtime/relay-encoder/src/westend.rs
+++ b/runtime/relay-encoder/src/westend.rs
@@ -17,7 +17,7 @@
 // We want to avoid including the rococo-runtime here.
 // TODO: whenever a conclusion is taken from https://github.com/paritytech/substrate/issues/8158
 
-use cumulus_primitives_core::{relay_chain::v2::HrmpChannelId, ParaId};
+use cumulus_primitives_core::{relay_chain::HrmpChannelId, ParaId};
 use parity_scale_codec::{Decode, Encode};
 use sp_runtime::traits::{AccountIdLookup, StaticLookup};
 use sp_runtime::AccountId32;