diff --git a/node/Cargo.toml b/node/Cargo.toml
index cbb4732..35349d2 100644
--- a/node/Cargo.toml
+++ b/node/Cargo.toml
@@ -18,7 +18,7 @@ targets = ['x86_64-unknown-linux-gnu']
 
 [build-dependencies.substrate-build-script-utils]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '3.0.0'
 
 [dependencies.node-template-runtime]
@@ -31,140 +31,140 @@ structopt = '0.3.8'
 
 [dependencies.frame-benchmarking]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.frame-benchmarking-cli]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.pallet-transaction-payment-rpc]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sc-basic-authorship]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '0.10.0-dev'
 
 [dependencies.sc-cli]
 features = ['wasmtime']
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '0.10.0-dev'
 
 [dependencies.sc-client-api]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sc-consensus]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '0.10.0-dev'
 
 [dependencies.sc-consensus-aura]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '0.10.0-dev'
 
 [dependencies.sc-executor]
 features = ['wasmtime']
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '0.10.0-dev'
 
 [dependencies.sc-finality-grandpa]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '0.10.0-dev'
 
 [dependencies.sc-keystore]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sc-rpc]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sc-rpc-api]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '0.10.0-dev'
 
 [dependencies.sc-service]
 features = ['wasmtime']
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '0.10.0-dev'
 
 [dependencies.sc-telemetry]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sc-transaction-pool]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sc-transaction-pool-api]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-api]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-block-builder]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-blockchain]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-consensus]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '0.10.0-dev'
 
 [dependencies.sp-consensus-aura]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '0.10.0-dev'
 
 [dependencies.sp-core]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-finality-grandpa]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-runtime]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-timestamp]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.substrate-frame-rpc-system]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [features]
diff --git a/node/src/chain_spec.rs b/node/src/chain_spec.rs
index baf5e5d..d32a0dc 100644
--- a/node/src/chain_spec.rs
+++ b/node/src/chain_spec.rs
@@ -134,7 +134,6 @@ fn testnet_genesis(
 		system: SystemConfig {
 			// Add Wasm runtime to storage.
 			code: wasm_binary.to_vec(),
-			changes_trie_config: Default::default(),
 		},
 		balances: BalancesConfig {
 			// Configure endowed accounts with initial balance of 1 << 60.
diff --git a/node/src/service.rs b/node/src/service.rs
index d673a54..82b1c56 100644
--- a/node/src/service.rs
+++ b/node/src/service.rs
@@ -89,7 +89,7 @@ pub fn new_partial(
 	let client = Arc::new(client);
 
 	let telemetry = telemetry.map(|(worker, telemetry)| {
-		task_manager.spawn_handle().spawn("telemetry", worker.run());
+		task_manager.spawn_handle().spawn("telemetry", None, worker.run());
 		telemetry
 	});
 
@@ -194,7 +194,6 @@ pub fn new_full(mut config: Configuration) -> Result<TaskManager, ServiceError>
 			transaction_pool: transaction_pool.clone(),
 			spawn_handle: task_manager.spawn_handle(),
 			import_queue,
-			on_demand: None,
 			block_announce_validator_builder: None,
 			warp_sync: Some(warp_sync),
 		})?;
@@ -234,8 +233,6 @@ pub fn new_full(mut config: Configuration) -> Result<TaskManager, ServiceError>
 		task_manager: &mut task_manager,
 		transaction_pool: transaction_pool.clone(),
 		rpc_extensions_builder,
-		on_demand: None,
-		remote_blockchain: None,
 		backend,
 		system_rpc_tx,
 		config,
@@ -289,7 +286,9 @@ pub fn new_full(mut config: Configuration) -> Result<TaskManager, ServiceError>
 
 		// the AURA authoring task is considered essential, i.e. if it
 		// fails we take down the service with it.
-		task_manager.spawn_essential_handle().spawn_blocking("aura", aura);
+		task_manager
+			.spawn_essential_handle()
+			.spawn_blocking("aura", Some("block-authoring"), aura);
 	}
 
 	// if the node isn't actively participating in consensus then it doesn't
@@ -329,6 +328,7 @@ pub fn new_full(mut config: Configuration) -> Result<TaskManager, ServiceError>
 		// if it fails we take down the service with it.
 		task_manager.spawn_essential_handle().spawn_blocking(
 			"grandpa-voter",
+			None,
 			sc_finality_grandpa::run_grandpa_voter(grandpa_config)?,
 		);
 	}
diff --git a/pallets/template/Cargo.toml b/pallets/template/Cargo.toml
index cfb7240..8327e6d 100644
--- a/pallets/template/Cargo.toml
+++ b/pallets/template/Cargo.toml
@@ -22,19 +22,19 @@ version = '2.0.0'
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
 optional = true
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.frame-support]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.frame-system]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.scale-info]
@@ -45,19 +45,19 @@ version = '1.0'
 [dev-dependencies.sp-core]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dev-dependencies.sp-io]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dev-dependencies.sp-runtime]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [features]
@@ -70,4 +70,4 @@ std = [
     'frame-system/std',
     'frame-benchmarking/std',
 ]
-try-runtime = ['frame-support/try-runtime']
\ No newline at end of file
+try-runtime = ['frame-support/try-runtime']
diff --git a/pallets/template/src/lib.rs b/pallets/template/src/lib.rs
index 1859916..f5ce8c5 100644
--- a/pallets/template/src/lib.rs
+++ b/pallets/template/src/lib.rs
@@ -16,7 +16,7 @@ mod benchmarking;
 
 #[frame_support::pallet]
 pub mod pallet {
-	use frame_support::{dispatch::DispatchResult, pallet_prelude::*};
+	use frame_support::pallet_prelude::*;
 	use frame_system::pallet_prelude::*;
 
 	/// Configure the pallet by specifying the parameters and types on which it depends.
diff --git a/runtime/Cargo.toml b/runtime/Cargo.toml
index 51e89d0..06c3171 100644
--- a/runtime/Cargo.toml
+++ b/runtime/Cargo.toml
@@ -19,7 +19,7 @@ version = '4.0.0-dev'
 
 [build-dependencies.substrate-wasm-builder]
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '5.0.0-dev'
 
 [dependencies.codec]
@@ -32,38 +32,38 @@ version = '2.0.0'
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
 optional = true
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.frame-executive]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.frame-support]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.frame-system]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.frame-system-benchmarking]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
 optional = true
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.frame-system-rpc-runtime-api]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.hex-literal]
@@ -73,49 +73,49 @@ version = '0.3.1'
 [dependencies.pallet-aura]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.pallet-balances]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.pallet-grandpa]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.pallet-randomness-collective-flip]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.pallet-sudo]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.pallet-timestamp]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.pallet-transaction-payment]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.pallet-transaction-payment-rpc-runtime-api]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.scale-info]
@@ -126,67 +126,67 @@ version = '1.0'
 [dependencies.sp-api]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-block-builder]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-consensus-aura]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '0.10.0-dev'
 
 [dependencies.sp-core]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-inherents]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-offchain]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-runtime]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-session]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-std]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-transaction-pool]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [dependencies.sp-version]
 default-features = false
 git = 'https://github.com/paritytech/substrate.git'
-tag = 'devhub/latest'
+tag = 'monthly-2021-12'
 version = '4.0.0-dev'
 
 [features]
diff --git a/runtime/src/lib.rs b/runtime/src/lib.rs
index 8ecb219..4eaa0aa 100644
--- a/runtime/src/lib.rs
+++ b/runtime/src/lib.rs
@@ -323,7 +323,7 @@ pub type Executive = frame_executive::Executive<
 	Block,
 	frame_system::ChainContext<Runtime>,
 	Runtime,
-	AllPallets,
+	AllPalletsWithSystem,
 >;
 
 impl_runtime_apis! {