diff --git a/substrate/frame/bounties/src/benchmarking.rs b/substrate/frame/bounties/src/benchmarking.rs
index 8ad85d5420ed..1e931958898d 100644
--- a/substrate/frame/bounties/src/benchmarking.rs
+++ b/substrate/frame/bounties/src/benchmarking.rs
@@ -25,7 +25,7 @@ use alloc::{vec, vec::Vec};
 use frame_benchmarking::v1::{
 	account, benchmarks_instance_pallet, whitelisted_caller, BenchmarkError,
 };
-use frame_system::{pallet_prelude::BlockNumberFor, RawOrigin};
+use frame_system::{pallet_prelude::BlockNumberFor as SystemBlockNumberFor, RawOrigin};
 use sp_runtime::traits::{BlockNumberProvider, Bounded};
 
 use crate::Pallet as Bounties;
@@ -33,7 +33,7 @@ use pallet_treasury::Pallet as Treasury;
 
 const SEED: u32 = 0;
 
-fn set_block_number<T: Config<I>, I: 'static>(n: BlockNumberFor<T>) {
+fn set_block_number<T: Config<I>, I: 'static>(n: BlockNumberFor<T, I>) {
 	<T as pallet_treasury::Config<I>>::BlockNumberProvider::set_block_number(n);
 }
 
@@ -132,7 +132,7 @@ benchmarks_instance_pallet! {
 		Bounties::<T, I>::propose_bounty(RawOrigin::Signed(caller).into(), value, reason)?;
 		let bounty_id = BountyCount::<T, I>::get() - 1;
 		let approve_origin = T::SpendOrigin::try_successful_origin().map_err(|_| BenchmarkError::Weightless)?;
-		Treasury::<T, I>::on_initialize(BlockNumberFor::<T>::zero());
+		Treasury::<T, I>::on_initialize(SystemBlockNumberFor::<T>::zero());
 	}: _<T::RuntimeOrigin>(approve_origin, bounty_id, curator_lookup, fee)
 	verify {
 		assert_last_event::<T, I>(
diff --git a/substrate/frame/bounties/src/lib.rs b/substrate/frame/bounties/src/lib.rs
index 3ed408a19120..729c76b5cc75 100644
--- a/substrate/frame/bounties/src/lib.rs
+++ b/substrate/frame/bounties/src/lib.rs
@@ -105,7 +105,9 @@ use sp_runtime::{
 use frame_support::{dispatch::DispatchResultWithPostInfo, traits::EnsureOrigin};
 
 use frame_support::pallet_prelude::*;
-use frame_system::pallet_prelude::*;
+use frame_system::pallet_prelude::{
+	ensure_signed, BlockNumberFor as SystemBlockNumberFor, OriginFor,
+};
 use scale_info::TypeInfo;
 pub use weights::WeightInfo;
 
@@ -120,6 +122,9 @@ pub type BountyIndex = u32;
 
 type AccountIdLookupOf<T> = <<T as frame_system::Config>::Lookup as StaticLookup>::Source;
 
+type BlockNumberFor<T, I = ()> =
+	<<T as pallet_treasury::Config<I>>::BlockNumberProvider as BlockNumberProvider>::BlockNumber;
+
 /// A bounty proposal.
 #[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
 pub struct Bounty<AccountId, Balance, BlockNumber> {
@@ -213,11 +218,11 @@ pub mod pallet {
 
 		/// The delay period for which a bounty beneficiary need to wait before claim the payout.
 		#[pallet::constant]
-		type BountyDepositPayoutDelay: Get<BlockNumberFor<Self>>;
+		type BountyDepositPayoutDelay: Get<BlockNumberFor<Self, I>>;
 
 		/// Bounty duration in blocks.
 		#[pallet::constant]
-		type BountyUpdatePeriod: Get<BlockNumberFor<Self>>;
+		type BountyUpdatePeriod: Get<BlockNumberFor<Self, I>>;
 
 		/// The curator deposit is calculated as a percentage of the curator fee.
 		///
@@ -326,7 +331,7 @@ pub mod pallet {
 		_,
 		Twox64Concat,
 		BountyIndex,
-		Bounty<T::AccountId, BalanceOf<T, I>, BlockNumberFor<T>>,
+		Bounty<T::AccountId, BalanceOf<T, I>, BlockNumberFor<T, I>>,
 	>;
 
 	/// The description of each bounty.
@@ -876,9 +881,9 @@ pub mod pallet {
 	}
 
 	#[pallet::hooks]
-	impl<T: Config<I>, I: 'static> Hooks<BlockNumberFor<T>> for Pallet<T, I> {
+	impl<T: Config<I>, I: 'static> Hooks<SystemBlockNumberFor<T>> for Pallet<T, I> {
 		#[cfg(feature = "try-runtime")]
-		fn try_state(_n: BlockNumberFor<T>) -> Result<(), sp_runtime::TryRuntimeError> {
+		fn try_state(_n: SystemBlockNumberFor<T>) -> Result<(), sp_runtime::TryRuntimeError> {
 			Self::do_try_state()
 		}
 	}
@@ -928,7 +933,7 @@ impl<T: Config<I>, I: 'static> Pallet<T, I> {
 	/// Get the block number used in the treasury pallet.
 	///
 	/// It may be configured to use the relay chain block number on a parachain.
-	pub fn treasury_block_number() -> BlockNumberFor<T> {
+	pub fn treasury_block_number() -> BlockNumberFor<T, I> {
 		<T as pallet_treasury::Config<I>>::BlockNumberProvider::current_block_number()
 	}
 
diff --git a/substrate/frame/child-bounties/src/benchmarking.rs b/substrate/frame/child-bounties/src/benchmarking.rs
index 4b2d62cd920e..2864f3ab5048 100644
--- a/substrate/frame/child-bounties/src/benchmarking.rs
+++ b/substrate/frame/child-bounties/src/benchmarking.rs
@@ -22,7 +22,7 @@
 use alloc::vec;
 use frame_benchmarking::{v2::*, BenchmarkError};
 use frame_support::ensure;
-use frame_system::{pallet_prelude::BlockNumberFor, RawOrigin};
+use frame_system::RawOrigin;
 use pallet_bounties::Pallet as Bounties;
 use pallet_treasury::Pallet as Treasury;
 use sp_runtime::traits::BlockNumberProvider;
diff --git a/substrate/frame/child-bounties/src/lib.rs b/substrate/frame/child-bounties/src/lib.rs
index ea1d9547d465..9fca26510989 100644
--- a/substrate/frame/child-bounties/src/lib.rs
+++ b/substrate/frame/child-bounties/src/lib.rs
@@ -79,7 +79,9 @@ use sp_runtime::{
 };
 
 use frame_support::pallet_prelude::*;
-use frame_system::pallet_prelude::*;
+use frame_system::pallet_prelude::{
+	ensure_signed, BlockNumberFor as SystemBlockNumberFor, OriginFor,
+};
 use pallet_bounties::BountyStatus;
 use scale_info::TypeInfo;
 pub use weights::WeightInfo;
@@ -90,6 +92,8 @@ type BalanceOf<T> = pallet_treasury::BalanceOf<T>;
 type BountiesError<T> = pallet_bounties::Error<T>;
 type BountyIndex = pallet_bounties::BountyIndex;
 type AccountIdLookupOf<T> = <<T as frame_system::Config>::Lookup as StaticLookup>::Source;
+type BlockNumberFor<T> =
+	<<T as pallet_treasury::Config>::BlockNumberProvider as BlockNumberProvider>::BlockNumber;
 
 /// A child bounty proposal.
 #[derive(Encode, Decode, Clone, PartialEq, Eq, RuntimeDebug, TypeInfo, MaxEncodedLen)]
@@ -810,7 +814,7 @@ pub mod pallet {
 	}
 
 	#[pallet::hooks]
-	impl<T: Config> Hooks<BlockNumberFor<T>> for Pallet<T> {
+	impl<T: Config> Hooks<SystemBlockNumberFor<T>> for Pallet<T> {
 		fn integrity_test() {
 			let parent_bounty_id: BountyIndex = 1;
 			let child_bounty_id: BountyIndex = 2;