diff --git a/cli/src/cli.rs b/cli/src/cli.rs
index d3ec195a97ff..cb3cfa19f6d4 100644
--- a/cli/src/cli.rs
+++ b/cli/src/cli.rs
@@ -59,6 +59,10 @@ pub struct RunCmd {
 	#[structopt(long = "force-westend")]
 	pub force_westend: bool,
 
+	/// Force using Rococo native runtime.
+	#[structopt(long)]
+	pub force_rococo: bool,
+
 	/// Enable the authority discovery module on validator or sentry nodes.
 	///
 	/// When enabled:
diff --git a/cli/src/command.rs b/cli/src/command.rs
index 86e8796408f7..1ce9b5550b97 100644
--- a/cli/src/command.rs
+++ b/cli/src/command.rs
@@ -68,13 +68,25 @@ impl SubstrateCli for Cli {
 			"rococo-staging" => Box::new(service::chain_spec::rococo_staging_testnet_config()?),
 			"rococo-local" => Box::new(service::chain_spec::rococo_local_testnet_config()?),
 			"rococo" => Box::new(service::chain_spec::rococo_config()?),
-			path if self.run.force_kusama => {
-				Box::new(service::KusamaChainSpec::from_json_file(std::path::PathBuf::from(path))?)
-			},
-			path if self.run.force_westend => {
-				Box::new(service::WestendChainSpec::from_json_file(std::path::PathBuf::from(path))?)
+			path => {
+				let path = std::path::PathBuf::from(path);
+
+				let starts_with = |prefix: &str| {
+					path.file_name().map(|f| f.to_str().map(|s| s.starts_with(&prefix))).flatten().unwrap_or(false)
+				};
+
+				// When `force_*` is given or the file name starts with the name of one of the known chains,
+				// we use the chain spec for the specific chain.
+				if self.run.force_rococo || starts_with("rococo") {
+					Box::new(service::RococoChainSpec::from_json_file(path)?)
+				} else if self.run.force_kusama || starts_with("kusama") {
+					Box::new(service::KusamaChainSpec::from_json_file(path)?)
+				} else if self.run.force_westend || starts_with("westend") {
+					Box::new(service::WestendChainSpec::from_json_file(path)?)
+				} else {
+					Box::new(service::PolkadotChainSpec::from_json_file(path)?)
+				}
 			},
-			path => Box::new(service::PolkadotChainSpec::from_json_file(std::path::PathBuf::from(path))?),
 		})
 	}
 
@@ -83,6 +95,8 @@ impl SubstrateCli for Cli {
 			&service::kusama_runtime::VERSION
 		} else if spec.is_westend() {
 			&service::westend_runtime::VERSION
+		} else if spec.is_rococo() {
+			&service::rococo_runtime::VERSION
 		} else {
 			&service::polkadot_runtime::VERSION
 		}
diff --git a/service/src/lib.rs b/service/src/lib.rs
index a8b8d398999b..d5ecec9f21a0 100644
--- a/service/src/lib.rs
+++ b/service/src/lib.rs
@@ -25,11 +25,12 @@ use std::time::Duration;
 use polkadot_primitives::v0::{self as parachain, Hash, BlockId};
 #[cfg(feature = "full-node")]
 use polkadot_network::{legacy::gossip::Known, protocol as network_protocol};
-use service::{error::Error as ServiceError};
+use service::error::Error as ServiceError;
 use grandpa::{self, FinalityProofProvider as GrandpaFinalityProofProvider};
 use sc_executor::native_executor_instance;
 use log::info;
 use sp_trie::PrefixedMemoryDB;
+use prometheus_endpoint::Registry;
 pub use service::{
 	Role, PruningMode, TransactionPoolOptions, Error, RuntimeGenesis, RpcHandlers,
 	TFullClient, TLightClient, TFullBackend, TLightBackend, TFullCallExecutor, TLightCallExecutor,
@@ -44,14 +45,14 @@ pub use sp_runtime::traits::{HashFor, NumberFor};
 pub use consensus_common::{SelectChain, BlockImport, block_validation::Chain};
 pub use polkadot_primitives::v0::{Block, CollatorId, ParachainHost};
 pub use sp_runtime::traits::{Block as BlockT, self as runtime_traits, BlakeTwo256};
-pub use chain_spec::{PolkadotChainSpec, KusamaChainSpec, WestendChainSpec};
+pub use chain_spec::{PolkadotChainSpec, KusamaChainSpec, WestendChainSpec, RococoChainSpec};
 #[cfg(feature = "full-node")]
 pub use consensus::run_validation_worker;
 pub use codec::Codec;
 pub use polkadot_runtime;
 pub use kusama_runtime;
 pub use westend_runtime;
-use prometheus_endpoint::Registry;
+pub use rococo_runtime;
 pub use self::client::*;
 
 native_executor_instance!(
@@ -364,7 +365,7 @@ pub fn new_full<RuntimeApi, Executor>(
 	let polkadot_network_service = network_protocol::start(
 		network.clone(),
 		network_protocol::Config {
-			collating_for: collating_for,
+			collating_for,
 		},
 		(is_known, client.clone()),
 		client.clone(),