diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f53a6b53f2..a4b5d0a845 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -21,7 +21,7 @@ jobs:
         dotnet-version: ${{ env.DOTNET_VERSION }}
     - name: Check format
       run: |
-        dotnet tool install --tool-path ./ dotnet-format
+        dotnet tool install --version 3.2.111002 --tool-path ./ dotnet-format --add-source https://dotnet.myget.org/F/format/api/v3/index.json
         ./dotnet-format --check --dry-run -v diagnostic
     - name: Test
       run: |
diff --git a/tests/neo.UnitTests/IO/UT_ByteArrayComparer.cs b/tests/neo.UnitTests/IO/UT_ByteArrayComparer.cs
index dab1adcd8b..562e2b6f6e 100644
--- a/tests/neo.UnitTests/IO/UT_ByteArrayComparer.cs
+++ b/tests/neo.UnitTests/IO/UT_ByteArrayComparer.cs
@@ -1,4 +1,4 @@
-using FluentAssertions;
+using FluentAssertions;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.IO;
 
diff --git a/tests/neo.UnitTests/Ledger/UT_HashIndexState.cs b/tests/neo.UnitTests/Ledger/UT_HashIndexState.cs
index bfc85479dd..b7a0de93c8 100644
--- a/tests/neo.UnitTests/Ledger/UT_HashIndexState.cs
+++ b/tests/neo.UnitTests/Ledger/UT_HashIndexState.cs
@@ -1,4 +1,4 @@
-using FluentAssertions;
+using FluentAssertions;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.IO;
 using Neo.Ledger;
diff --git a/tests/neo.UnitTests/Ledger/UT_HeaderHashList.cs b/tests/neo.UnitTests/Ledger/UT_HeaderHashList.cs
index 2f198f4c6c..482c620a00 100644
--- a/tests/neo.UnitTests/Ledger/UT_HeaderHashList.cs
+++ b/tests/neo.UnitTests/Ledger/UT_HeaderHashList.cs
@@ -1,4 +1,4 @@
-using FluentAssertions;
+using FluentAssertions;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.IO;
 using Neo.Ledger;
diff --git a/tests/neo.UnitTests/Ledger/UT_TransactionState.cs b/tests/neo.UnitTests/Ledger/UT_TransactionState.cs
index 7abf431849..11ef772556 100644
--- a/tests/neo.UnitTests/Ledger/UT_TransactionState.cs
+++ b/tests/neo.UnitTests/Ledger/UT_TransactionState.cs
@@ -1,4 +1,4 @@
-using FluentAssertions;
+using FluentAssertions;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.IO;
 using Neo.Ledger;
diff --git a/tests/neo.UnitTests/SmartContract/Manifest/UT_ContractEventDescriptor.cs b/tests/neo.UnitTests/SmartContract/Manifest/UT_ContractEventDescriptor.cs
index abbc4af5a0..a829354e34 100644
--- a/tests/neo.UnitTests/SmartContract/Manifest/UT_ContractEventDescriptor.cs
+++ b/tests/neo.UnitTests/SmartContract/Manifest/UT_ContractEventDescriptor.cs
@@ -1,4 +1,4 @@
-using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.SmartContract.Manifest;
 
 namespace Neo.UnitTests.SmartContract.Manifest
diff --git a/tests/neo.UnitTests/SmartContract/Manifest/UT_ContractPermissionDescriptor.cs b/tests/neo.UnitTests/SmartContract/Manifest/UT_ContractPermissionDescriptor.cs
index 299ff2e49d..972911b296 100644
--- a/tests/neo.UnitTests/SmartContract/Manifest/UT_ContractPermissionDescriptor.cs
+++ b/tests/neo.UnitTests/SmartContract/Manifest/UT_ContractPermissionDescriptor.cs
@@ -1,4 +1,4 @@
-using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.SmartContract.Manifest;
 using Neo.Wallets;
 using System.Security.Cryptography;
diff --git a/tests/neo.UnitTests/SmartContract/Manifest/UT_WildCardContainer.cs b/tests/neo.UnitTests/SmartContract/Manifest/UT_WildCardContainer.cs
index 9a6743e4a5..f983d65f09 100644
--- a/tests/neo.UnitTests/SmartContract/Manifest/UT_WildCardContainer.cs
+++ b/tests/neo.UnitTests/SmartContract/Manifest/UT_WildCardContainer.cs
@@ -1,4 +1,4 @@
-using FluentAssertions;
+using FluentAssertions;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.IO.Json;
 using Neo.SmartContract.Manifest;
diff --git a/tests/neo.UnitTests/SmartContract/UT_NefFile.cs b/tests/neo.UnitTests/SmartContract/UT_NefFile.cs
index 23d8040c79..36a988d8b8 100644
--- a/tests/neo.UnitTests/SmartContract/UT_NefFile.cs
+++ b/tests/neo.UnitTests/SmartContract/UT_NefFile.cs
@@ -1,4 +1,4 @@
-using FluentAssertions;
+using FluentAssertions;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Neo.IO;
 using Neo.SmartContract;