diff --git a/Cargo.lock b/Cargo.lock
index 48f0a31f5..83bfc9dc6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4607,6 +4607,7 @@ dependencies = [
  "asset-hub-polkadot-runtime",
  "cumulus-pallet-xcm",
  "cumulus-primitives-core",
+ "frame-metadata-hash-extension",
  "frame-support",
  "frame-system",
  "itertools 0.11.0",
@@ -5864,6 +5865,20 @@ dependencies = [
  "hash-db",
 ]
 
+[[package]]
+name = "merkleized-metadata"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f313fcff1d2a4bcaa2deeaa00bf7530d77d5f7bd0467a117dde2e29a75a7a17a"
+dependencies = [
+ "array-bytes",
+ "blake3",
+ "frame-metadata",
+ "parity-scale-codec",
+ "scale-decode",
+ "scale-info",
+]
+
 [[package]]
 name = "merlin"
 version = "3.0.0"
@@ -8784,6 +8799,7 @@ dependencies = [
  "cumulus-primitives-utility",
  "frame-benchmarking",
  "frame-executive",
+ "frame-metadata-hash-extension",
  "frame-support",
  "frame-system",
  "frame-system-benchmarking",
@@ -12718,6 +12734,29 @@ dependencies = [
  "sp-arithmetic",
 ]
 
+[[package]]
+name = "scale-bits"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e57b1e7f6b65ed1f04e79a85a57d755ad56d76fdf1e9bddcc9ae14f71fcdcf54"
+dependencies = [
+ "parity-scale-codec",
+ "scale-type-resolver",
+]
+
+[[package]]
+name = "scale-decode"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e98f3262c250d90e700bb802eb704e1f841e03331c2eb815e46516c4edbf5b27"
+dependencies = [
+ "derive_more",
+ "parity-scale-codec",
+ "scale-bits",
+ "scale-type-resolver",
+ "smallvec",
+]
+
 [[package]]
 name = "scale-info"
 version = "2.11.3"
@@ -12744,6 +12783,12 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "scale-type-resolver"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0cded6518aa0bd6c1be2b88ac81bf7044992f0f154bfbabd5ad34f43512abcb"
+
 [[package]]
 name = "schannel"
 version = "0.1.23"
@@ -14700,13 +14745,22 @@ version = "23.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7dc993ad871b63fbba60362f3ea86583f5e7e1256e8fdcb3b5b249c9ead354bf"
 dependencies = [
+ "array-bytes",
  "build-helper",
  "cargo_metadata",
  "console",
  "filetime",
+ "frame-metadata",
+ "merkleized-metadata",
+ "parity-scale-codec",
  "parity-wasm",
  "polkavm-linker",
+ "sc-executor",
+ "sp-core",
+ "sp-io",
  "sp-maybe-compressed-blob",
+ "sp-tracing",
+ "sp-version",
  "strum 0.26.3",
  "tempfile",
  "toml 0.8.15",
diff --git a/Cargo.toml b/Cargo.toml
index 8e93ee393..951f2d8d3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -119,6 +119,7 @@ frame-system = { version = "35.0.0", default-features = false }
 frame-system-rpc-runtime-api = { version = "33.0.0", default-features = false }
 frame-system-benchmarking = { version = "35.0.0", default-features = false }
 frame-try-runtime = { version = "0.41.0", default-features = false }
+frame-metadata-hash-extension = { version = "0.3.0", default-features = false }
 sp-api = { version = "33.0.0", default-features = false }
 sp-debug-derive = { version = "14.0.0", default-features = false }
 sp-std = { version = "14.0.0", default-features = false }
diff --git a/integration-tests/Cargo.toml b/integration-tests/Cargo.toml
index 91a3f5f38..3dfc45a81 100644
--- a/integration-tests/Cargo.toml
+++ b/integration-tests/Cargo.toml
@@ -74,6 +74,7 @@ itertools.workspace = true
 pallet-democracy.workspace = true
 pallet-scheduler.workspace = true
 pallet-treasury.workspace = true
+frame-metadata-hash-extension.workspace = true
 
 # Runtimes
 polkadot-runtime.workspace = true
@@ -88,6 +89,7 @@ std = [
 	"asset-hub-polkadot-runtime/std",
 	"cumulus-pallet-xcm/std",
 	"cumulus-primitives-core/std",
+	"frame-metadata-hash-extension/std",
 	"frame-support/std",
 	"frame-system/std",
 	"itertools/use_std",
@@ -142,18 +144,6 @@ std = [
 development-settings = [ "polimec-runtime/development-settings" ]
 runtime-benchmarks = [
 	"asset-hub-polkadot-runtime/runtime-benchmarks",
-	"polkadot-runtime/runtime-benchmarks",
-	"penpal-runtime/runtime-benchmarks",
-	"pallet-democracy/runtime-benchmarks",
-	"pallet-dispenser/runtime-benchmarks",
-	"pallet-elections-phragmen/runtime-benchmarks",
-	"pallet-funding/runtime-benchmarks",
-	"pallet-linear-release/runtime-benchmarks",
-	"pallet-parachain-staking/runtime-benchmarks",
-	"polimec-receiver/runtime-benchmarks",
-	"polimec-common/runtime-benchmarks",
-	"polimec-common-test-utils/runtime-benchmarks",
-	"polimec-runtime/runtime-benchmarks",
 	"cumulus-primitives-core/runtime-benchmarks",
 	"frame-support/runtime-benchmarks",
 	"frame-system/runtime-benchmarks",
@@ -161,21 +151,33 @@ runtime-benchmarks = [
 	"pallet-assets/runtime-benchmarks",
 	"pallet-balances/runtime-benchmarks",
 	"pallet-collective/runtime-benchmarks",
+	"pallet-democracy/runtime-benchmarks",
+	"pallet-dispenser/runtime-benchmarks",
+	"pallet-elections-phragmen/runtime-benchmarks",
+	"pallet-funding/runtime-benchmarks",
 	"pallet-im-online/runtime-benchmarks",
+	"pallet-linear-release/runtime-benchmarks",
 	"pallet-membership/runtime-benchmarks",
 	"pallet-message-queue/runtime-benchmarks",
+	"pallet-parachain-staking/runtime-benchmarks",
 	"pallet-scheduler/runtime-benchmarks",
 	"pallet-staking/runtime-benchmarks",
 	"pallet-treasury/runtime-benchmarks",
 	"pallet-vesting/runtime-benchmarks",
 	"pallet-xcm/runtime-benchmarks",
 	"parachains-common/runtime-benchmarks",
+	"penpal-runtime/runtime-benchmarks",
+	"polimec-common-test-utils/runtime-benchmarks",
+	"polimec-common/runtime-benchmarks",
+	"polimec-receiver/runtime-benchmarks",
+	"polimec-runtime/runtime-benchmarks",
 	"polkadot-parachain-primitives/runtime-benchmarks",
 	"polkadot-primitives/runtime-benchmarks",
 	"polkadot-runtime-parachains/runtime-benchmarks",
+	"polkadot-runtime/runtime-benchmarks",
 	"polkadot-service/runtime-benchmarks",
 	"sp-runtime/runtime-benchmarks",
 	"xcm-builder/runtime-benchmarks",
-	"xcm-executor/runtime-benchmarks"
+	"xcm-executor/runtime-benchmarks",
 ]
 
diff --git a/integration-tests/src/tests/credentials.rs b/integration-tests/src/tests/credentials.rs
index d4c1c174c..81d9b49a6 100644
--- a/integration-tests/src/tests/credentials.rs
+++ b/integration-tests/src/tests/credentials.rs
@@ -79,6 +79,7 @@ fn dispenser_signed_extensions_pass_for_new_account() {
 			pallet_dispenser::extensions::CheckNonce::<PolimecRuntime>::from(0u32),
 			frame_system::CheckWeight::<PolimecRuntime>::new(),
 			pallet_transaction_payment::ChargeTransactionPayment::<PolimecRuntime>::from(0u64.into()).into(),
+			frame_metadata_hash_extension::CheckMetadataHash::<PolimecRuntime>::new(true),
 		);
 		assert_err!(
 			extra.validate(&who, &paid_call, &paid_call.get_dispatch_info(), 0),
diff --git a/pallets/funding/Cargo.toml b/pallets/funding/Cargo.toml
index b9bbf8ebf..247e98e2b 100644
--- a/pallets/funding/Cargo.toml
+++ b/pallets/funding/Cargo.toml
@@ -101,6 +101,7 @@ runtime-benchmarks = [
 	"frame-support/runtime-benchmarks",
 	"frame-system/runtime-benchmarks",
 	"itertools/use_alloc",
+	"on-slash-vesting/runtime-benchmarks",
 	"pallet-assets/runtime-benchmarks",
 	"pallet-balances/runtime-benchmarks",
 	"pallet-linear-release/runtime-benchmarks",
@@ -114,7 +115,6 @@ runtime-benchmarks = [
 	"sp-runtime/runtime-benchmarks",
 	"xcm-builder/runtime-benchmarks",
 	"xcm-executor/runtime-benchmarks",
-	"on-slash-vesting/runtime-benchmarks"
 ]
 try-runtime = [
 	"frame-support/try-runtime",
diff --git a/pallets/funding/src/lib.rs b/pallets/funding/src/lib.rs
index c5c0b530b..117ab002e 100644
--- a/pallets/funding/src/lib.rs
+++ b/pallets/funding/src/lib.rs
@@ -29,8 +29,8 @@
 //! There are 3 types of users in Polimec:
 //! - **Issuers**: They create projects and are responsible for their success.
 //! - **Evaluators**: They are incentivized to assess projects accurately by locking their PLMC. If at least 10% of its
-//! target funding (in USD) is locked in PLMC, a project is given access to the funding round. Evaluators are either
-//! rewarded in contribution tokens if the project gets funded, or have their PLMC slashed otherwise.
+//!     target funding (in USD) is locked in PLMC, a project is given access to the funding round. Evaluators are either
+//!     rewarded in contribution tokens if the project gets funded, or have their PLMC slashed otherwise.
 //! - **Participants**: They contribute financially to projects by locking PLMC and paying out USDT/USDC/DOT, and are rewarded in contribution tokens.
 //!
 //! Users need to go through a KYC/AML by a third party in order to use the protocol. This process classifies them
@@ -52,15 +52,15 @@
 //! 10) **Remainder Round Start**: After a defined [period](<T as Config>::CommunityRoundDuration), the remainder round starts.
 //! 11) **Contribute**: Participants with winning bids can also contribute at the weighted average price with the [`contribute`](Pallet::contribute) extrinsic.
 //! 12) **Funding End**: Anyone can end the project with the [`end_project`](Pallet::end_project) extrinsic after the defined end block.
-//! The project will now be considered Failed if it reached <=33% of its target funding in USD, and Successful otherwise.
+//!     The project will now be considered Failed if it reached <=33% of its target funding in USD, and Successful otherwise.
 //! 13) **Settlement Start**: Anyone can start the settlement process with the [`start_settlement`](Pallet::start_settlement) extrinsic after the defined end block.
 //! 14) **Settle Evaluation**: Anyone can now settle an evaluation with the [`settle_evaluation`](Pallet::settle_evaluation) extrinsic.
-//! This will unlock the PLMC bonded, and either apply a slash to the PLMC, or reward CTs to the evaluator.
+//!     This will unlock the PLMC bonded, and either apply a slash to the PLMC, or reward CTs to the evaluator.
 //! 15) **Settle Bid**: Anyone can now settle a bid with the [`settle_bid`](Pallet::settle_bid) extrinsic.
-//! This will set a vesting schedule on the PLMC bonded, and pay out the funding assets to the issuer. It will also issue refunds in case the bid failed,
-//! or the price paid was higher than the weighted average price.
+//!     This will set a vesting schedule on the PLMC bonded, and pay out the funding assets to the issuer. It will also issue refunds in case the bid failed,
+//!     or the price paid was higher than the weighted average price.
 //! 16) **Settle Contribution**: Anyone can now settle a contribution with the [`settle_contribution`](Pallet::settle_contribution) extrinsic.
-//! This will set a vesting schedule on the PLMC bonded, and pay out the funding assets to the issuer.
+//!     This will set a vesting schedule on the PLMC bonded, and pay out the funding assets to the issuer.
 //! 17) **Settlement End**: Anyone can now mark the project settlement as finished by calling the [`mark_project_as_settled`](Pallet::mark_project_as_settled) extrinsic.
 //! 18) **Migration Start**: Once the issuer has tokens to distribute on mainnet, he can start the migration process with the [`start_offchain`](Pallet::start_offchain_migration) extrinsic.
 //! 19) **Confirm Migration**: The issuer has to mark each participant's CTs as migrated with the [`confirm_offchain_migration`](Pallet::confirm_offchain_migration) extrinsic.
diff --git a/pallets/on-slash-vesting/Cargo.toml b/pallets/on-slash-vesting/Cargo.toml
index fc668a065..78777e040 100644
--- a/pallets/on-slash-vesting/Cargo.toml
+++ b/pallets/on-slash-vesting/Cargo.toml
@@ -46,5 +46,5 @@ runtime-benchmarks = [
 	"frame-system/runtime-benchmarks",
 	"pallet-balances/runtime-benchmarks",
 	"pallet-vesting/runtime-benchmarks",
-	"sp-runtime/runtime-benchmarks"
+	"sp-runtime/runtime-benchmarks",
 ]
diff --git a/pallets/on-slash-vesting/src/mock.rs b/pallets/on-slash-vesting/src/mock.rs
index 0e7aebb80..c227403b0 100644
--- a/pallets/on-slash-vesting/src/mock.rs
+++ b/pallets/on-slash-vesting/src/mock.rs
@@ -65,8 +65,6 @@ impl pallet_balances::Config for TestRuntime {
 }
 
 impl pallet_vesting::Config for TestRuntime {
-	#[cfg(feature = "runtime-benchmarks")]
-	type BenchmarkReason = BenchmarkReason;
 	type BlockNumberProvider = System;
 	type BlockNumberToBalance = ConvertInto;
 	type Currency = Balances;
diff --git a/pallets/on-slash-vesting/src/test.rs b/pallets/on-slash-vesting/src/test.rs
index 25947965e..f64498142 100644
--- a/pallets/on-slash-vesting/src/test.rs
+++ b/pallets/on-slash-vesting/src/test.rs
@@ -59,7 +59,6 @@ fn multiple_schedules() {
 		assert_ok!(<PalletBalances as MutateHold<u64>>::hold(&MockRuntimeHoldReason::Reason, &1u64, 100u128));
 		assert_eq!(PalletBalances::usable_balance(1), 0);
 
-
 		PalletSystem::set_block_number(3);
 
 		// Unlock 10*2 + 65*2 + 5*2 + 20*2 = 200
diff --git a/runtimes/polimec/Cargo.toml b/runtimes/polimec/Cargo.toml
index 63c0b724d..fd5af08e6 100644
--- a/runtimes/polimec/Cargo.toml
+++ b/runtimes/polimec/Cargo.toml
@@ -14,7 +14,7 @@ version.workspace = true
 workspace = true
 
 [build-dependencies]
-substrate-wasm-builder.workspace = true
+substrate-wasm-builder = { workspace = true, optional = true }
 
 [dependencies]
 parity-scale-codec = { workspace= true,  default-features = false, features = [
@@ -81,6 +81,7 @@ sp-std.workspace = true
 sp-transaction-pool.workspace = true
 sp-version.workspace = true
 sp-genesis-builder.workspace = true
+frame-metadata-hash-extension.workspace = true
 
 # Polkadot
 pallet-xcm.workspace = true
@@ -124,6 +125,7 @@ std = [
 	"cumulus-primitives-utility/std",
 	"frame-benchmarking?/std",
 	"frame-executive/std",
+	"frame-metadata-hash-extension/std",
 	"frame-support/std",
 	"frame-system-benchmarking?/std",
 	"frame-system-rpc-runtime-api/std",
@@ -181,6 +183,7 @@ std = [
 	"sp-std/std",
 	"sp-transaction-pool/std",
 	"sp-version/std",
+	"substrate-wasm-builder",
 	"xcm-builder/std",
 	"xcm-executor/std",
 	"xcm/std",
@@ -197,6 +200,7 @@ runtime-benchmarks = [
 	"frame-support/runtime-benchmarks",
 	"frame-system-benchmarking/runtime-benchmarks",
 	"frame-system/runtime-benchmarks",
+	"on-slash-vesting/runtime-benchmarks",
 	"orml-oracle/runtime-benchmarks",
 	"pallet-assets/runtime-benchmarks",
 	"pallet-balances/runtime-benchmarks",
@@ -228,7 +232,6 @@ runtime-benchmarks = [
 	"sp-runtime/runtime-benchmarks",
 	"xcm-builder/runtime-benchmarks",
 	"xcm-executor/runtime-benchmarks",
-	"on-slash-vesting/runtime-benchmarks"
 ]
 
 try-runtime = [
@@ -279,8 +282,12 @@ try-runtime = [
 # deployment. This will disable stuff that shouldn't be part of the on-chain wasm
 # to make it smaller, like logging for example.
 on-chain-release-build = [
+	"metadata-hash",
 	"pallet-funding/on-chain-release-build",
 	"sp-api/disable-logging",
 ]
 
 development-settings = [ "shared-configuration/development-settings" ]
+
+# Enable the metadata hash generation in the wasm-builder
+metadata-hash = [ "substrate-wasm-builder?/metadata-hash" ]
diff --git a/runtimes/polimec/build.rs b/runtimes/polimec/build.rs
index fcbbf573c..d8e369ce5 100644
--- a/runtimes/polimec/build.rs
+++ b/runtimes/polimec/build.rs
@@ -14,8 +14,17 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-use substrate_wasm_builder::WasmBuilder;
+#[cfg(all(feature = "std", feature = "metadata-hash"))]
+fn main() {
+	substrate_wasm_builder::WasmBuilder::init_with_defaults().enable_metadata_hash("PLMC", 10).build();
+}
 
+#[cfg(all(feature = "std", not(feature = "metadata-hash")))]
 fn main() {
-	WasmBuilder::new().with_current_project().export_heap_base().import_memory().build();
+	substrate_wasm_builder::WasmBuilder::build_using_defaults();
 }
+
+/// The wasm builder is deactivated when compiling
+/// this crate for wasm to speed up the compilation.
+#[cfg(not(feature = "std"))]
+fn main() {}
diff --git a/runtimes/polimec/src/lib.rs b/runtimes/polimec/src/lib.rs
index 953c3ed85..db0447098 100644
--- a/runtimes/polimec/src/lib.rs
+++ b/runtimes/polimec/src/lib.rs
@@ -149,6 +149,7 @@ pub type SignedExtra = (
 		Runtime,
 		pallet_transaction_payment::ChargeTransactionPayment<Runtime>,
 	>,
+	frame_metadata_hash_extension::CheckMetadataHash<Runtime>,
 );
 
 /// Unchecked extrinsic type as expected by this runtime.
@@ -901,6 +902,7 @@ where
 			pallet_dispenser::extensions::SkipCheckIfFeeless::from(
 				pallet_transaction_payment::ChargeTransactionPayment::<Runtime>::from(tip),
 			),
+			frame_metadata_hash_extension::CheckMetadataHash::<Runtime>::new(true),
 		);
 		let raw_payload = generic::SignedPayload::new(call, extra)
 			.map_err(|e| {
diff --git a/runtimes/polimec/src/xcm_config.rs b/runtimes/polimec/src/xcm_config.rs
index 852035f65..0f419d94c 100644
--- a/runtimes/polimec/src/xcm_config.rs
+++ b/runtimes/polimec/src/xcm_config.rs
@@ -17,7 +17,7 @@
 use super::{
 	AccountId, AllPalletsWithSystem, AssetId as AssetIdPalletAssets, Balance, Balances, EnsureRoot, ForeignAssets,
 	Funding, ParachainInfo, ParachainSystem, PolkadotXcm, Runtime, RuntimeCall, RuntimeEvent, RuntimeOrigin,
-	ToTreasury, TreasuryAccount, Vec, WeightToFee, XcmpQueue,
+	ToTreasury, TreasuryAccount, Vec, WeightToFee,
 };
 use core::marker::PhantomData;
 use cumulus_primitives_core::ParaId;
@@ -320,7 +320,7 @@ pub type XcmRouter = (
 	// Two routers - use UMP to communicate with the relay chain:
 	cumulus_primitives_utility::ParentAsUmp<ParachainSystem, PolkadotXcm, ()>,
 	// ..and XCMP to communicate with the sibling chains.
-	XcmpQueue,
+	super::XcmpQueue,
 );
 #[cfg(feature = "runtime-benchmarks")]
 pub type XcmRouter = DummyXcmSender;
diff --git a/scripts/zombienet/polimec-paseo-local.toml b/scripts/zombienet/polimec-paseo-local.toml
index ecac63573..db2df7309 100644
--- a/scripts/zombienet/polimec-paseo-local.toml
+++ b/scripts/zombienet/polimec-paseo-local.toml
@@ -20,7 +20,7 @@ chain_spec_path = "./scripts/zombienet/relay-chain-specs/paseo-local.plain.json"
 
 [[parachains]]
 id = 3344
-chain = "polimec-paseo"
+chain = "polimec-paseo-local"
 
 	[[parachains.collators]]
 	name = "collator1"