diff --git a/Cargo.lock b/Cargo.lock
index 85a361e944b..91fa8c5a72b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2332,13 +2332,16 @@ dependencies = [
  "cumulus-relay-chain-rpc-interface",
  "futures",
  "lru 0.9.0",
+ "polkadot-availability-recovery",
+ "polkadot-collator-protocol",
  "polkadot-core-primitives",
  "polkadot-network-bridge",
+ "polkadot-node-collation-generation",
+ "polkadot-node-core-runtime-api",
  "polkadot-node-network-protocol",
  "polkadot-node-subsystem-util",
  "polkadot-overseer",
  "polkadot-primitives",
- "polkadot-service",
  "sc-authority-discovery",
  "sc-client-api",
  "sc-network",
diff --git a/client/relay-chain-interface/src/lib.rs b/client/relay-chain-interface/src/lib.rs
index db4fd24c64f..3629aea84cd 100644
--- a/client/relay-chain-interface/src/lib.rs
+++ b/client/relay-chain-interface/src/lib.rs
@@ -46,7 +46,9 @@ pub enum RelayChainError {
 	WaitTimeout(PHash),
 	#[error("Import listener closed while waiting for relay-chain block `{0}` to be imported.")]
 	ImportListenerClosed(PHash),
-	#[error("Blockchain returned an error while waiting for relay-chain block `{0}` to be imported: {1}")]
+	#[error(
+		"Blockchain returned an error while waiting for relay-chain block `{0}` to be imported: {1}"
+	)]
 	WaitBlockchainError(PHash, sp_blockchain::Error),
 	#[error("Blockchain returned an error: {0}")]
 	BlockchainError(#[from] sp_blockchain::Error),
@@ -86,6 +88,12 @@ impl From<RelayChainError> for sp_blockchain::Error {
 	}
 }
 
+impl<T: std::error::Error + Send + Sync + 'static> From<Box<T>> for RelayChainError {
+	fn from(r: Box<T>) -> Self {
+		RelayChainError::Application(r)
+	}
+}
+
 /// Trait that provides all necessary methods for interaction between collator and relay chain.
 #[async_trait]
 pub trait RelayChainInterface: Send + Sync {
diff --git a/client/relay-chain-minimal-node/Cargo.toml b/client/relay-chain-minimal-node/Cargo.toml
index 737445c30c1..ff8d8bc11d3 100644
--- a/client/relay-chain-minimal-node/Cargo.toml
+++ b/client/relay-chain-minimal-node/Cargo.toml
@@ -9,10 +9,14 @@ edition = "2021"
 polkadot-primitives = { git = "https://github.com/paritytech/polkadot", branch = "master" }
 polkadot-core-primitives = { git = "https://github.com/paritytech/polkadot", branch = "master" }
 polkadot-overseer = { git = "https://github.com/paritytech/polkadot", branch = "master" }
-polkadot-service = { git = "https://github.com/paritytech/polkadot", branch = "master" }
 polkadot-node-subsystem-util = { git = "https://github.com/paritytech/polkadot", branch = "master" }
 polkadot-node-network-protocol = { git = "https://github.com/paritytech/polkadot", branch = "master" }
+
+polkadot-availability-recovery = { git = "https://github.com/paritytech/polkadot", branch = "master" }
+polkadot-collator-protocol = { git = "https://github.com/paritytech/polkadot", branch = "master" }
 polkadot-network-bridge = { git = "https://github.com/paritytech/polkadot", branch = "master" }
+polkadot-node-collation-generation = { git = "https://github.com/paritytech/polkadot", branch = "master" }
+polkadot-node-core-runtime-api = { git = "https://github.com/paritytech/polkadot", branch = "master" }
 
 # substrate deps
 sc-authority-discovery = { git = "https://github.com/paritytech/substrate", branch = "master" }
diff --git a/client/relay-chain-minimal-node/src/collator_overseer.rs b/client/relay-chain-minimal-node/src/collator_overseer.rs
index 9bcbc2a67a8..bd3dfa8e0f8 100644
--- a/client/relay-chain-minimal-node/src/collator_overseer.rs
+++ b/client/relay-chain-minimal-node/src/collator_overseer.rs
@@ -18,6 +18,14 @@ use futures::{select, StreamExt};
 use lru::LruCache;
 use std::sync::Arc;
 
+use polkadot_availability_recovery::AvailabilityRecoverySubsystem;
+use polkadot_collator_protocol::{CollatorProtocolSubsystem, ProtocolSide};
+use polkadot_network_bridge::{
+	Metrics as NetworkBridgeMetrics, NetworkBridgeRx as NetworkBridgeRxSubsystem,
+	NetworkBridgeTx as NetworkBridgeTxSubsystem,
+};
+use polkadot_node_collation_generation::CollationGenerationSubsystem;
+use polkadot_node_core_runtime_api::RuntimeApiSubsystem;
 use polkadot_node_network_protocol::{
 	peer_set::PeerSetProtocolNames,
 	request_response::{
@@ -27,18 +35,10 @@ use polkadot_node_network_protocol::{
 };
 use polkadot_node_subsystem_util::metrics::{prometheus::Registry, Metrics};
 use polkadot_overseer::{
-	BlockInfo, DummySubsystem, Handle, MetricsTrait, Overseer, OverseerHandle, OverseerMetrics,
-	SpawnGlue, KNOWN_LEAVES_CACHE_SIZE,
+	BlockInfo, DummySubsystem, Handle, Overseer, OverseerConnector, OverseerHandle, SpawnGlue,
+	KNOWN_LEAVES_CACHE_SIZE,
 };
 use polkadot_primitives::CollatorPair;
-use polkadot_service::{
-	overseer::{
-		AvailabilityRecoverySubsystem, CollationGenerationSubsystem, CollatorProtocolSubsystem,
-		NetworkBridgeMetrics, NetworkBridgeRxSubsystem, NetworkBridgeTxSubsystem, ProtocolSide,
-		RuntimeApiSubsystem,
-	},
-	Error, OverseerConnector,
-};
 
 use sc_authority_discovery::Service as AuthorityDiscoveryService;
 use sc_network::NetworkStateInfo;
@@ -93,9 +93,8 @@ fn build_overseer<'a>(
 	}: CollatorOverseerGenArgs<'a>,
 ) -> Result<
 	(Overseer<SpawnGlue<sc_service::SpawnTaskHandle>, Arc<BlockChainRpcClient>>, OverseerHandle),
-	Error,
+	RelayChainError,
 > {
-	let metrics = <OverseerMetrics as MetricsTrait>::register(registry)?;
 	let spawner = SpawnGlue(spawner);
 	let network_bridge_metrics: NetworkBridgeMetrics = Metrics::register(registry)?;
 	let builder = Overseer::builder()
@@ -153,17 +152,19 @@ fn build_overseer<'a>(
 		.active_leaves(Default::default())
 		.supports_parachains(runtime_client)
 		.known_leaves(LruCache::new(KNOWN_LEAVES_CACHE_SIZE))
-		.metrics(metrics)
+		.metrics(Metrics::register(registry)?)
 		.spawner(spawner);
 
-	builder.build_with_connector(connector).map_err(|e| e.into())
+	builder
+		.build_with_connector(connector)
+		.map_err(|e| RelayChainError::Application(e.into()))
 }
 
 pub(crate) fn spawn_overseer(
 	overseer_args: CollatorOverseerGenArgs,
 	task_manager: &TaskManager,
 	relay_chain_rpc_client: Arc<BlockChainRpcClient>,
-) -> Result<polkadot_overseer::Handle, polkadot_service::Error> {
+) -> Result<polkadot_overseer::Handle, RelayChainError> {
 	let (overseer, overseer_handle) = build_overseer(OverseerConnector::default(), overseer_args)
 		.map_err(|e| {
 		tracing::error!("Failed to initialize overseer: {}", e);
diff --git a/client/relay-chain-minimal-node/src/lib.rs b/client/relay-chain-minimal-node/src/lib.rs
index 90afd31b8b6..102a8582745 100644
--- a/client/relay-chain-minimal-node/src/lib.rs
+++ b/client/relay-chain-minimal-node/src/lib.rs
@@ -181,8 +181,7 @@ async fn new_minimal_relay_chain(
 	};
 
 	let overseer_handle =
-		collator_overseer::spawn_overseer(overseer_args, &task_manager, relay_chain_rpc_client)
-			.map_err(|e| RelayChainError::Application(Box::new(e) as Box<_>))?;
+		collator_overseer::spawn_overseer(overseer_args, &task_manager, relay_chain_rpc_client)?;
 
 	network_starter.start_network();