diff --git a/Substrate.NetApi.Test/Keys/Sr25519Tests.cs b/Substrate.NetApi.Test/Keys/Sr25519Tests.cs
index b2d48e9..5bf1782 100644
--- a/Substrate.NetApi.Test/Keys/Sr25519Tests.cs
+++ b/Substrate.NetApi.Test/Keys/Sr25519Tests.cs
@@ -87,26 +87,5 @@ public void Sr25519SignatureTestComparePolkadotJs(string polkadotJsSignature)
             var simpleSign2 = Utils.HexToByteArray(polkadotJsSignature);
             Assert.True(Substrate.NET.Schnorrkel.Sr25519v091.Verify(simpleSign2, keyPairAlice.Public.Key, messageBytes));
         }
-
-        [Test]
-        [TestCase("0x5c42ac4e2d55b8e59d9b255af370de03fe177f5545eecbbd784531cb2eb1f2553e0e2b91656f99fae930eb6ff8ac1a3eca4e19d307ecb39832a479a478a8608a")]
-        public async Task AccountSr25519SignatureTestComparePolkadotJsAsync(string polkadotJsSignature)
-        {
-            var miniSecretAlice = new MiniSecret(Utils.HexToByteArray("0xe5be9a5092b81bca64be81d212e7f2f9eba183bb7a90954f7b76361f6edb5c0a"), ExpandMode.Ed25519);
-
-        //    var account = Account.Build(KeyType.Sr25519, miniSecretAlice.ExpandToSecret().ToEd25519Bytes(), miniSecretAlice.GetPair().Public.Key);
-
-        //    var message = "I test this signature!";
-        //    var messageBytes = WrapMessage.Wrap(message);
-
-            var signature1 = await Task.Run(() => account.Sign(messageBytes));
-            var signature2 = await account.SignAsync(messageBytes);
-
-            Assert.True(account.Verify(signature1, account.Bytes, messageBytes));
-            Assert.True(account.Verify(signature2, account.Bytes, messageBytes));
-
-            var signature3 = Utils.HexToByteArray(polkadotJsSignature);
-            Assert.True(account.Verify(signature3, account.Bytes, messageBytes));
-        }
     }
 }
\ No newline at end of file
diff --git a/Substrate.NetApi.TestNode/ExtrinsicsTest.cs b/Substrate.NetApi.TestNode/ExtrinsicsTest.cs
index 2f08408..07299e3 100644
--- a/Substrate.NetApi.TestNode/ExtrinsicsTest.cs
+++ b/Substrate.NetApi.TestNode/ExtrinsicsTest.cs
@@ -1,13 +1,13 @@
 using NUnit.Framework;
 using NUnit.Framework.Internal;
-using Schnorrkel.Keys;
+using Substrate.NET.Schnorrkel.Keys;
 using Substrate.NetApi.Model.Extrinsics;
 using Substrate.NetApi.Model.Rpc;
 using Substrate.NetApi.Model.Types;
 using Substrate.NetApi.Model.Types.Base;
 using System;
 using System.Threading;
-using Substrate.NET.System.Threading.Tasks;
+using System.Threading.Tasks;
 
 namespace Substrate.NetApi.TestNode
 {
diff --git a/Substrate.NetApi.TestNode/Substrate.NetApi.TestNode.csproj b/Substrate.NetApi.TestNode/Substrate.NetApi.TestNode.csproj
index 846957e..a4dfdb3 100644
--- a/Substrate.NetApi.TestNode/Substrate.NetApi.TestNode.csproj
+++ b/Substrate.NetApi.TestNode/Substrate.NetApi.TestNode.csproj
@@ -14,6 +14,7 @@
 		  <PrivateAssets>all</PrivateAssets>
 		  <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>
+		<PackageReference Include="Substrate.NET.Schnorrkel" Version="1.2.1" />
 	</ItemGroup>
 
 	<ItemGroup>