diff --git a/parachain/runtime/kintsugi/src/contracts.rs b/parachain/runtime/kintsugi/src/contracts.rs
index 9347f866aa..b9d1a05fd7 100644
--- a/parachain/runtime/kintsugi/src/contracts.rs
+++ b/parachain/runtime/kintsugi/src/contracts.rs
@@ -1,5 +1,4 @@
-use crate::{BaseCallFilter, NativeCurrency, Runtime, RuntimeCall, RuntimeEvent, Timestamp, Weight};
-use bitcoin::types::{MerkleProof, Transaction};
+use crate::{NativeCurrency, Runtime, RuntimeCall, RuntimeEvent, Timestamp, Weight};
 use btc_relay::FullTransactionProof;
 use codec::{Decode, Encode};
 use frame_support::{
@@ -36,7 +35,7 @@ impl Convert<Weight, Balance> for DummyWeightPrice {
 // contracts
 parameter_types! {
     pub const DeletionQueueDepth: u32 = 10;
-    pub const DeletionWeightLimit: Weight = Weight::from_ref_time(100000000 as u64);
+    pub const DeletionWeightLimit: Weight = Weight::from_parts(100000000, 0);
     pub const DepositPerByte: Balance = 1;
     pub const DepositPerItem: Balance = 1;
     pub const MaxCodeLen: u32 = 123 * 1024;
diff --git a/parachain/src/service.rs b/parachain/src/service.rs
index 76719ed7de..2d38956b75 100644
--- a/parachain/src/service.rs
+++ b/parachain/src/service.rs
@@ -15,7 +15,7 @@ use polkadot_service::CollatorPair;
 use primitives::*;
 use sc_client_api::{HeaderBackend, StateBackendFor};
 use sc_consensus::{ImportQueue, LongestChain};
-use sc_executor::NativeElseWasmExecutor;
+use sc_executor::{HeapAllocStrategy, NativeElseWasmExecutor, WasmExecutor, DEFAULT_HEAP_ALLOC_STRATEGY};
 use sc_network::NetworkBlock;
 use sc_network_sync::SyncingService;
 use sc_service::{Configuration, PartialComponents, RpcHandlers, TFullBackend, TFullClient, TaskManager};
@@ -254,11 +254,20 @@ where
         })
         .transpose()?;
 
-    let executor = NativeElseWasmExecutor::<Executor>::new(
-        config.wasm_method,
-        config.default_heap_pages,
-        config.max_runtime_instances,
-        config.runtime_cache_size,
+    let heap_pages = config
+        .default_heap_pages
+        .map_or(DEFAULT_HEAP_ALLOC_STRATEGY, |h| HeapAllocStrategy::Static {
+            extra_pages: h as _,
+        });
+
+    let executor = NativeElseWasmExecutor::<Executor>::new_with_wasm_executor(
+        WasmExecutor::builder()
+            .with_execution_method(config.wasm_method)
+            .with_onchain_heap_alloc_strategy(heap_pages)
+            .with_offchain_heap_alloc_strategy(heap_pages)
+            .with_max_runtime_instances(config.max_runtime_instances)
+            .with_runtime_cache_size(config.runtime_cache_size)
+            .build(),
     );
 
     let (client, backend, keystore_container, task_manager) = sc_service::new_full_parts::<Block, RuntimeApi, _>(