diff --git a/bridges/bin/rialto-parachain/node/src/service.rs b/bridges/bin/rialto-parachain/node/src/service.rs
index 7e516ed56825e..f21a2f65e795b 100644
--- a/bridges/bin/rialto-parachain/node/src/service.rs
+++ b/bridges/bin/rialto-parachain/node/src/service.rs
@@ -502,8 +502,8 @@ pub async fn start_node(
 					keystore,
 					force_authoring,
 					slot_duration,
-					// We got around 500ms for proposing
-					block_proposal_slot_portion: SlotProportion::new(1f32 / 24f32),
+					// We got around 1000ms for proposing
+					block_proposal_slot_portion: SlotProportion::new(1f32 / 12f32),
 					telemetry,
 					max_block_proposal_slot_portion: None,
 				},
diff --git a/bridges/bin/rialto/runtime/src/lib.rs b/bridges/bin/rialto/runtime/src/lib.rs
index 8f45a2a19190d..8d57e99b2972b 100644
--- a/bridges/bin/rialto/runtime/src/lib.rs
+++ b/bridges/bin/rialto/runtime/src/lib.rs
@@ -495,7 +495,7 @@ construct_runtime!(
 		Inclusion: polkadot_runtime_parachains::inclusion::{Pallet, Call, Storage, Event<T>},
 		ParasInherent: polkadot_runtime_parachains::paras_inherent::{Pallet, Call, Storage, Inherent},
 		Scheduler: polkadot_runtime_parachains::scheduler::{Pallet, Storage},
-		Paras: polkadot_runtime_parachains::paras::{Pallet, Call, Storage, Event, Config},
+		Paras: polkadot_runtime_parachains::paras::{Pallet, Call, Storage, Event, Config, ValidateUnsigned},
 		Initializer: polkadot_runtime_parachains::initializer::{Pallet, Call, Storage},
 		Dmp: polkadot_runtime_parachains::dmp::{Pallet, Storage},
 		Ump: polkadot_runtime_parachains::ump::{Pallet, Call, Storage, Event},
diff --git a/bridges/bin/rialto/runtime/src/parachains.rs b/bridges/bin/rialto/runtime/src/parachains.rs
index 8ceb27140f004..f2542cf032952 100644
--- a/bridges/bin/rialto/runtime/src/parachains.rs
+++ b/bridges/bin/rialto/runtime/src/parachains.rs
@@ -21,7 +21,7 @@ use crate::{
 	RuntimeOrigin, ShiftSessionManager, Slots, UncheckedExtrinsic,
 };
 
-use frame_support::{parameter_types, traits::KeyOwnerProofSystem};
+use frame_support::{parameter_types, traits::KeyOwnerProofSystem, weights::Weight};
 use frame_system::EnsureRoot;
 use polkadot_primitives::v4::{ValidatorId, ValidatorIndex};
 use polkadot_runtime_common::{paras_registrar, paras_sudo_wrapper, slots};
@@ -106,11 +106,57 @@ parameter_types! {
 
 impl parachains_paras::Config for Runtime {
 	type RuntimeEvent = RuntimeEvent;
-	type WeightInfo = parachains_paras::TestWeightInfo;
+	type WeightInfo = ParasWeightInfo;
 	type UnsignedPriority = ParasUnsignedPriority;
 	type NextSessionRotation = Babe;
 }
 
+/// Test weight for the `Paras` pallet.
+///
+/// We can't use `parachains_paras::TestWeightInfo` anymore, because it returns `Weight::MAX`
+/// where we need some real-world weights. We'll use zero weights here, though to avoid
+/// adding benchmarks to Rialto runtime.
+pub struct ParasWeightInfo;
+
+impl parachains_paras::WeightInfo for ParasWeightInfo {
+	fn force_set_current_code(_c: u32) -> Weight {
+		Weight::zero()
+	}
+	fn force_set_current_head(_s: u32) -> Weight {
+		Weight::zero()
+	}
+	fn force_schedule_code_upgrade(_c: u32) -> Weight {
+		Weight::zero()
+	}
+	fn force_note_new_head(_s: u32) -> Weight {
+		Weight::zero()
+	}
+	fn force_queue_action() -> Weight {
+		Weight::zero()
+	}
+	fn add_trusted_validation_code(_c: u32) -> Weight {
+		Weight::zero()
+	}
+	fn poke_unused_validation_code() -> Weight {
+		Weight::zero()
+	}
+	fn include_pvf_check_statement_finalize_upgrade_accept() -> Weight {
+		Weight::zero()
+	}
+	fn include_pvf_check_statement_finalize_upgrade_reject() -> Weight {
+		Weight::zero()
+	}
+	fn include_pvf_check_statement_finalize_onboarding_accept() -> Weight {
+		Weight::zero()
+	}
+	fn include_pvf_check_statement_finalize_onboarding_reject() -> Weight {
+		Weight::zero()
+	}
+	fn include_pvf_check_statement() -> Weight {
+		Weight::zero()
+	}
+}
+
 impl parachains_paras_inherent::Config for Runtime {
 	type WeightInfo = parachains_paras_inherent::TestWeightInfo;
 }