diff --git a/src/neo/IO/Json/JObject.cs b/src/neo/IO/Json/JObject.cs
index adf46f9c90..9b725381af 100644
--- a/src/neo/IO/Json/JObject.cs
+++ b/src/neo/IO/Json/JObject.cs
@@ -2,7 +2,6 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
-using System.Text;
 using System.Text.Json;
 
 namespace Neo.IO.Json
diff --git a/src/neo/Network/P2P/Payloads/BlockBase.cs b/src/neo/Network/P2P/Payloads/BlockBase.cs
index b724f5e074..51dfd3377e 100644
--- a/src/neo/Network/P2P/Payloads/BlockBase.cs
+++ b/src/neo/Network/P2P/Payloads/BlockBase.cs
@@ -1,4 +1,3 @@
-using Neo.Cryptography;
 using Neo.IO;
 using Neo.IO.Json;
 using Neo.Persistence;
diff --git a/src/neo/Persistence/MemorySnapshot.cs b/src/neo/Persistence/MemorySnapshot.cs
index ec3caf80be..e5800c08ae 100644
--- a/src/neo/Persistence/MemorySnapshot.cs
+++ b/src/neo/Persistence/MemorySnapshot.cs
@@ -1,6 +1,5 @@
 using Neo.IO;
 using Neo.IO.Caching;
-using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Collections.Immutable;
diff --git a/src/neo/Persistence/MemoryStore.cs b/src/neo/Persistence/MemoryStore.cs
index bba1cf73aa..fdcd06f013 100644
--- a/src/neo/Persistence/MemoryStore.cs
+++ b/src/neo/Persistence/MemoryStore.cs
@@ -1,6 +1,5 @@
 using Neo.IO;
 using Neo.IO.Caching;
-using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/src/neo/Plugins/IMemoryPoolTxObserverPlugin.cs b/src/neo/Plugins/IMemoryPoolTxObserverPlugin.cs
index 3dd1cb3ef2..2d7e0b2d63 100644
--- a/src/neo/Plugins/IMemoryPoolTxObserverPlugin.cs
+++ b/src/neo/Plugins/IMemoryPoolTxObserverPlugin.cs
@@ -1,5 +1,5 @@
-using System.Collections.Generic;
 using Neo.Network.P2P.Payloads;
+using System.Collections.Generic;
 
 namespace Neo.Plugins
 {
diff --git a/src/neo/Plugins/IPersistencePlugin.cs b/src/neo/Plugins/IPersistencePlugin.cs
index 2884607b39..9c08677efa 100644
--- a/src/neo/Plugins/IPersistencePlugin.cs
+++ b/src/neo/Plugins/IPersistencePlugin.cs
@@ -1,5 +1,5 @@
-using System;
 using Neo.Persistence;
+using System;
 using System.Collections.Generic;
 using static Neo.Ledger.Blockchain;
 
diff --git a/src/neo/SmartContract/DeployedContract.cs b/src/neo/SmartContract/DeployedContract.cs
index 36465c37d7..c784811b5e 100644
--- a/src/neo/SmartContract/DeployedContract.cs
+++ b/src/neo/SmartContract/DeployedContract.cs
@@ -1,4 +1,3 @@
-using Neo.Ledger;
 using Neo.SmartContract.Manifest;
 using System;
 using System.Linq;
diff --git a/src/neo/SmartContract/Manifest/ContractPermission.cs b/src/neo/SmartContract/Manifest/ContractPermission.cs
index 8bc2784cce..646f6d476c 100644
--- a/src/neo/SmartContract/Manifest/ContractPermission.cs
+++ b/src/neo/SmartContract/Manifest/ContractPermission.cs
@@ -1,5 +1,4 @@
 using Neo.IO.Json;
-using Neo.Ledger;
 using System;
 using System.Linq;
 
diff --git a/tests/neo.UnitTests/Consensus/UT_ConsensusServiceMailbox.cs b/tests/neo.UnitTests/Consensus/UT_ConsensusServiceMailbox.cs
index 3c58c53473..bde5ed0106 100644
--- a/tests/neo.UnitTests/Consensus/UT_ConsensusServiceMailbox.cs
+++ b/tests/neo.UnitTests/Consensus/UT_ConsensusServiceMailbox.cs
@@ -1,14 +1,10 @@
-using Akka.TestKit;
 using Akka.TestKit.Xunit2;
 using FluentAssertions;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-using System;
-using Moq;
+using Neo.Consensus;
 using Neo.Ledger;
 using Neo.Network.P2P.Payloads;
-using Neo.Network.P2P;
-using Akka.Configuration;
-using Neo.Consensus;
+using System;
 
 namespace Neo.UnitTests.Consensus
 {
diff --git a/tests/neo.UnitTests/IO/Caching/UT_ReflectionCache.cs b/tests/neo.UnitTests/IO/Caching/UT_ReflectionCache.cs
index 547c18787d..62c1bd12ed 100644
--- a/tests/neo.UnitTests/IO/Caching/UT_ReflectionCache.cs
+++ b/tests/neo.UnitTests/IO/Caching/UT_ReflectionCache.cs
@@ -1,8 +1,8 @@
-using System.IO;
 using FluentAssertions;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.IO;
 using Neo.IO.Caching;
+using System.IO;
 
 namespace Neo.UnitTests.IO.Caching
 {
diff --git a/tests/neo.UnitTests/IO/Json/UT_JObject.cs b/tests/neo.UnitTests/IO/Json/UT_JObject.cs
index f32bf968dc..e2c394f5bb 100644
--- a/tests/neo.UnitTests/IO/Json/UT_JObject.cs
+++ b/tests/neo.UnitTests/IO/Json/UT_JObject.cs
@@ -1,7 +1,6 @@
 using FluentAssertions;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.IO.Json;
-using Neo.SmartContract.Manifest;
 using System;
 
 namespace Neo.UnitTests.IO.Json
diff --git a/tests/neo.UnitTests/Network/P2P/UT_Message.cs b/tests/neo.UnitTests/Network/P2P/UT_Message.cs
index 55d65449e2..c70e0b37fd 100644
--- a/tests/neo.UnitTests/Network/P2P/UT_Message.cs
+++ b/tests/neo.UnitTests/Network/P2P/UT_Message.cs
@@ -3,7 +3,6 @@
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.IO;
 using Neo.Network.P2P;
-using Neo.Network.P2P.Capabilities;
 using Neo.Network.P2P.Payloads;
 using System;
 using System.Linq;
diff --git a/tests/neo.UnitTests/SmartContract/Enumerators/UT_ConcatenatedEnumerator.cs b/tests/neo.UnitTests/SmartContract/Enumerators/UT_ConcatenatedEnumerator.cs
index bbcfcdde78..f7ad3a7274 100644
--- a/tests/neo.UnitTests/SmartContract/Enumerators/UT_ConcatenatedEnumerator.cs
+++ b/tests/neo.UnitTests/SmartContract/Enumerators/UT_ConcatenatedEnumerator.cs
@@ -2,7 +2,6 @@
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.SmartContract.Enumerators;
 using Neo.SmartContract.Iterators;
-using Neo.VM;
 using Neo.VM.Types;
 using System;
 using System.Collections.Generic;
diff --git a/tests/neo.UnitTests/SmartContract/Iterators/UT_ArrayWrapper.cs b/tests/neo.UnitTests/SmartContract/Iterators/UT_ArrayWrapper.cs
index 9aebf0861c..c997bb7fd6 100644
--- a/tests/neo.UnitTests/SmartContract/Iterators/UT_ArrayWrapper.cs
+++ b/tests/neo.UnitTests/SmartContract/Iterators/UT_ArrayWrapper.cs
@@ -1,7 +1,6 @@
 using FluentAssertions;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.SmartContract.Iterators;
-using Neo.VM;
 using Neo.VM.Types;
 using System;
 using System.Collections.Generic;
diff --git a/tests/neo.UnitTests/SmartContract/UT_DeployedContract.cs b/tests/neo.UnitTests/SmartContract/UT_DeployedContract.cs
index 16520b1049..0bb2a86419 100644
--- a/tests/neo.UnitTests/SmartContract/UT_DeployedContract.cs
+++ b/tests/neo.UnitTests/SmartContract/UT_DeployedContract.cs
@@ -1,5 +1,4 @@
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-using Neo.Ledger;
 using Neo.SmartContract;
 using System;
 
diff --git a/tests/neo.UnitTests/SmartContract/UT_InteropPrices.cs b/tests/neo.UnitTests/SmartContract/UT_InteropPrices.cs
index e0c90a1e8c..cdcd78247f 100644
--- a/tests/neo.UnitTests/SmartContract/UT_InteropPrices.cs
+++ b/tests/neo.UnitTests/SmartContract/UT_InteropPrices.cs
@@ -2,7 +2,6 @@
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.Ledger;
 using Neo.SmartContract;
-using Neo.SmartContract.Native;
 using Neo.UnitTests.Extensions;
 using Neo.VM;
 
diff --git a/tests/neo.UnitTests/Wallets/SQLite/UT_UserWalletAccount.cs b/tests/neo.UnitTests/Wallets/SQLite/UT_UserWalletAccount.cs
index 0a1fde1321..fe4fd48cb3 100644
--- a/tests/neo.UnitTests/Wallets/SQLite/UT_UserWalletAccount.cs
+++ b/tests/neo.UnitTests/Wallets/SQLite/UT_UserWalletAccount.cs
@@ -1,6 +1,5 @@
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.Wallets.SQLite;
-using System.Text;
 
 namespace Neo.UnitTests
 {