diff --git a/pallets/dapp-staking/src/migration.rs b/pallets/dapp-staking/src/migration.rs
index 43c1999d36..f782110e2a 100644
--- a/pallets/dapp-staking/src/migration.rs
+++ b/pallets/dapp-staking/src/migration.rs
@@ -20,7 +20,7 @@ use super::*;
 use frame_support::{
     migrations::{MigrationId, SteppedMigration, SteppedMigrationError},
     storage_alias,
-    traits::UncheckedOnRuntimeUpgrade,
+    traits::{OnRuntimeUpgrade, UncheckedOnRuntimeUpgrade},
     weights::WeightMeter,
 };
 
@@ -449,6 +449,7 @@ impl<T: Config, W: WeightInfo> SteppedMigration for LazyMigration<T, W> {
         }
 
         let mut count = 0u32;
+        let mut migrated = 0u32;
         let current_block_number =
             frame_system::Pallet::<T>::block_number().saturated_into::<u32>();
 
@@ -471,9 +472,13 @@ impl<T: Config, W: WeightInfo> SteppedMigration for LazyMigration<T, W> {
 
             // If there's a next item in the iterator, perform the migration.
             if let Some((ref last_key, mut ledger)) = iter.next() {
+                // inc count
+                count.saturating_inc();
+
                 if ledger.unlocking.is_empty() {
                     // no unlocking for this account, nothing to update
-                    cursor = Some(last_key.clone()); // Return the processed key as the new cursor.
+                    // Return the processed key as the new cursor.
+                    cursor = Some(last_key.clone());
                     continue;
                 }
                 for chunk in ledger.unlocking.iter_mut() {
@@ -487,8 +492,8 @@ impl<T: Config, W: WeightInfo> SteppedMigration for LazyMigration<T, W> {
                 // Override ledger
                 Ledger::<T>::insert(last_key, ledger);
 
-                // inc counter
-                count.saturating_inc();
+                // inc migrated
+                migrated.saturating_inc();
 
                 // Return the processed key as the new cursor.
                 cursor = Some(last_key.clone())
@@ -498,7 +503,25 @@ impl<T: Config, W: WeightInfo> SteppedMigration for LazyMigration<T, W> {
                 break;
             }
         }
-        log::debug!(target: LOG_TARGET, "migrated {count:?} entries");
+        log::info!(target: LOG_TARGET, "🚚 iterated {count} entries, migrated {migrated}");
         Ok(cursor)
     }
 }
+
+/// Double the remaining block for next era start
+pub struct AdjustEraMigration<T>(PhantomData<T>);
+
+impl<T: Config> OnRuntimeUpgrade for AdjustEraMigration<T> {
+    fn on_runtime_upgrade() -> Weight {
+        log::info!("🚚 migrated to async backing, adjust next era start");
+        ActiveProtocolState::<T>::mutate_exists(|maybe| {
+            if let Some(state) = maybe {
+                let current_block_number =
+                    frame_system::Pallet::<T>::block_number().saturated_into::<u32>();
+                let remaining = state.next_era_start.saturating_sub(current_block_number);
+                state.next_era_start.saturating_accrue(2 * remaining);
+            }
+        });
+        T::DbWeight::get().reads_writes(1, 1)
+    }
+}
diff --git a/pallets/inflation/src/lib.rs b/pallets/inflation/src/lib.rs
index 25fa4bd505..c9baf754a0 100644
--- a/pallets/inflation/src/lib.rs
+++ b/pallets/inflation/src/lib.rs
@@ -126,6 +126,7 @@ pub use weights::WeightInfo;
 #[cfg(any(feature = "runtime-benchmarks"))]
 pub mod benchmarking;
 
+pub mod migration;
 #[cfg(test)]
 mod mock;
 #[cfg(test)]
diff --git a/pallets/inflation/src/migration.rs b/pallets/inflation/src/migration.rs
new file mode 100644
index 0000000000..100b75a169
--- /dev/null
+++ b/pallets/inflation/src/migration.rs
@@ -0,0 +1,39 @@
+// This file is part of Astar.
+
+// Copyright (C) Stake Technologies Pte.Ltd.
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+// Astar is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Astar is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Astar. If not, see <http://www.gnu.org/licenses/>.
+
+use super::*;
+use frame_support::pallet_prelude::Weight;
+use frame_support::traits::OnRuntimeUpgrade;
+
+/// Half block reward for collators and treasury
+pub struct AdjustBlockRewardMigration<T>(core::marker::PhantomData<T>);
+
+impl<T: Config> OnRuntimeUpgrade for AdjustBlockRewardMigration<T> {
+    fn on_runtime_upgrade() -> Weight {
+        log::info!("🚚 migrated to async backing, adjust reward per block");
+        ActiveInflationConfig::<T>::mutate_exists(|maybe| {
+            if let Some(config) = maybe {
+                config.collator_reward_per_block =
+                    config.collator_reward_per_block.saturating_div(2);
+                config.treasury_reward_per_block =
+                    config.treasury_reward_per_block.saturating_div(2);
+            }
+        });
+        T::DbWeight::get().reads_writes(1, 1)
+    }
+}
diff --git a/runtime/shibuya/src/lib.rs b/runtime/shibuya/src/lib.rs
index 0aeeb6e47b..cd05f75113 100644
--- a/runtime/shibuya/src/lib.rs
+++ b/runtime/shibuya/src/lib.rs
@@ -1646,33 +1646,6 @@ pub type Executive = frame_executive::Executive<
     Migrations,
 >;
 
-parameter_types! {
-    // Threshold amount variation allowed for this migration - 150%
-    pub const ThresholdVariationPercentage: u32 = 150;
-    // percentages below are calculated based on a total issuance at the time when dApp staking v3 was launched (147M)
-    pub const TierThresholds: [TierThreshold; 4] = [
-        TierThreshold::DynamicPercentage {
-            percentage: Perbill::from_parts(20_000), // 0.0020%
-            minimum_required_percentage: Perbill::from_parts(17_000), // 0.0017%
-        },
-        TierThreshold::DynamicPercentage {
-            percentage: Perbill::from_parts(13_000), // 0.0013%
-            minimum_required_percentage: Perbill::from_parts(10_000), // 0.0010%
-        },
-        TierThreshold::DynamicPercentage {
-            percentage: Perbill::from_parts(5_400), // 0.00054%
-            minimum_required_percentage: Perbill::from_parts(3_400), // 0.00034%
-        },
-        TierThreshold::FixedPercentage {
-            required_percentage: Perbill::from_parts(1_400), // 0.00014%
-        },
-    ];
-}
-
-parameter_types! {
-    pub const DmpQueuePalletName: &'static str = "DmpQueue";
-}
-
 /// All migrations that will run on the next runtime upgrade.
 ///
 /// __NOTE:__ THE ORDER IS IMPORTANT.
@@ -1680,17 +1653,8 @@ pub type Migrations = (Unreleased, Permanent);
 
 /// Unreleased migrations. Add new ones here:
 pub type Unreleased = (
-    // dApp-staking dyn tier threshold migrations
-    pallet_dapp_staking::migration::versioned_migrations::V7ToV8<
-        Runtime,
-        TierThresholds,
-        ThresholdVariationPercentage,
-    >,
-    frame_support::migrations::RemovePallet<
-        DmpQueuePalletName,
-        <Runtime as frame_system::Config>::DbWeight,
-    >,
-    pallet_contracts::Migration<Runtime>,
+    pallet_dapp_staking::migration::AdjustEraMigration<Runtime>,
+    pallet_inflation::migration::AdjustBlockRewardMigration<Runtime>,
 );
 
 /// Migrations/checks that do not need to be versioned and can run on every upgrade.