diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f33b8f4..65a1ba9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -76,7 +76,7 @@ build-linux:
   <<:                              *build-refs
   script:
     - time cargo build --release
-    # - time cargo test --release --all
+    - time cargo test --release --all
     - mkdir -p ./artifacts/substrate-contracts-node-linux/
     - cp target/release/substrate-contracts-node ./artifacts/substrate-contracts-node-linux/substrate-contracts-node
 
diff --git a/runtime/src/lib.rs b/runtime/src/lib.rs
index 21427f5..81ef5d4 100644
--- a/runtime/src/lib.rs
+++ b/runtime/src/lib.rs
@@ -134,6 +134,16 @@ const fn deposit(items: u32, bytes: u32) -> Balance {
 	(items as Balance * UNIT + (bytes as Balance) * (5 * MILLIUNIT / 100)) / 10
 }
 
+fn schedule<T: pallet_contracts::Config>() -> pallet_contracts::Schedule<T> {
+	pallet_contracts::Schedule {
+		limits: pallet_contracts::Limits {
+			runtime_memory: 1024 * 1024 * 1024,
+			..Default::default()
+		},
+		..Default::default()
+	}
+}
+
 impl pallet_insecure_randomness_collective_flip::Config for Runtime {}
 
 parameter_types! {
@@ -315,7 +325,7 @@ impl pallet_assets::Config for Runtime {
 parameter_types! {
 	pub const DepositPerItem: Balance = deposit(1, 0);
 	pub const DepositPerByte: Balance = deposit(0, 1);
-	pub Schedule: pallet_contracts::Schedule<Runtime> = Default::default();
+	pub Schedule: pallet_contracts::Schedule<Runtime> = schedule::<Runtime>();
 	pub const DefaultDepositLimit: Balance = deposit(1024, 1024 * 1024);
 }
 
@@ -350,7 +360,7 @@ impl pallet_contracts::Config for Runtime {
 	type CallFilter = AllowBalancesCall;
 	type DepositPerItem = DepositPerItem;
 	type DepositPerByte = DepositPerByte;
-	type CallStack = [pallet_contracts::Frame<Self>; 31];
+	type CallStack = [pallet_contracts::Frame<Self>; 23];
 	type WeightPrice = pallet_transaction_payment::Pallet<Self>;
 	type WeightInfo = pallet_contracts::weights::SubstrateWeight<Self>;
 	type ChainExtension = pallet_assets_chain_extension::substrate::AssetsExtension;